diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 918 |
1 files changed, 582 insertions, 336 deletions
@@ -15,6 +15,7 @@ #include "sigchain.h" #include "submodule.h" #include "ll-merge.h" +#include "string-list.h" #ifdef NO_FAST_WORKING_DIRECTORY #define FAST_WORKING_DIRECTORY 0 @@ -25,14 +26,17 @@ static int diff_detect_rename_default; static int diff_rename_limit_default = 400; static int diff_suppress_blank_empty; -int diff_use_color_default = -1; +static int diff_use_color_default = -1; +static int diff_context_default = 3; static const char *diff_word_regex_cfg; static const char *external_diff_cmd_cfg; int diff_auto_refresh_index = 1; static int diff_mnemonic_prefix; static int diff_no_prefix; +static int diff_stat_graph_width; static int diff_dirstat_permille_default = 30; static struct diff_options default_diff_options; +static long diff_algorithm; static char diff_colors[][COLOR_MAXLEN] = { GIT_COLOR_RESET, @@ -67,26 +71,30 @@ static int parse_diff_color_slot(const char *var, int ofs) return -1; } -static int parse_dirstat_params(struct diff_options *options, const char *params, +static int parse_dirstat_params(struct diff_options *options, const char *params_string, struct strbuf *errmsg) { - const char *p = params; - int p_len, ret = 0; + char *params_copy = xstrdup(params_string); + struct string_list params = STRING_LIST_INIT_NODUP; + int ret = 0; + int i; - while (*p) { - p_len = strchrnul(p, ',') - p; - if (!memcmp(p, "changes", p_len)) { + if (*params_copy) + string_list_split_in_place(¶ms, params_copy, ',', -1); + for (i = 0; i < params.nr; i++) { + const char *p = params.items[i].string; + if (!strcmp(p, "changes")) { DIFF_OPT_CLR(options, DIRSTAT_BY_LINE); DIFF_OPT_CLR(options, DIRSTAT_BY_FILE); - } else if (!memcmp(p, "lines", p_len)) { + } else if (!strcmp(p, "lines")) { DIFF_OPT_SET(options, DIRSTAT_BY_LINE); DIFF_OPT_CLR(options, DIRSTAT_BY_FILE); - } else if (!memcmp(p, "files", p_len)) { + } else if (!strcmp(p, "files")) { DIFF_OPT_CLR(options, DIRSTAT_BY_LINE); DIFF_OPT_SET(options, DIRSTAT_BY_FILE); - } else if (!memcmp(p, "noncumulative", p_len)) { + } else if (!strcmp(p, "noncumulative")) { DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE); - } else if (!memcmp(p, "cumulative", p_len)) { + } else if (!strcmp(p, "cumulative")) { DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE); } else if (isdigit(*p)) { char *end; @@ -98,27 +106,35 @@ static int parse_dirstat_params(struct diff_options *options, const char *params while (isdigit(*++end)) ; /* nothing */ } - if (end - p == p_len) + if (!*end) options->dirstat_permille = permille; else { - strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%.*s'\n"), - p_len, p); + strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%s'\n"), + p); ret++; } } else { - strbuf_addf(errmsg, _(" Unknown dirstat parameter '%.*s'\n"), - p_len, p); + strbuf_addf(errmsg, _(" Unknown dirstat parameter '%s'\n"), p); ret++; } - p += p_len; - - if (*p) - p++; /* more parameters, swallow separator */ } + string_list_clear(¶ms, 0); + free(params_copy); return ret; } +static int parse_submodule_params(struct diff_options *options, const char *value) +{ + if (!strcmp(value, "log")) + DIFF_OPT_SET(options, SUBMODULE_LOG); + else if (!strcmp(value, "short")) + DIFF_OPT_CLR(options, SUBMODULE_LOG); + else + return -1; + return 0; +} + static int git_config_rename(const char *var, const char *value) { if (!value) @@ -128,6 +144,21 @@ static int git_config_rename(const char *var, const char *value) return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0; } +long parse_algorithm_value(const char *value) +{ + if (!value) + return -1; + else if (!strcasecmp(value, "myers") || !strcasecmp(value, "default")) + return 0; + else if (!strcasecmp(value, "minimal")) + return XDF_NEED_MINIMAL; + else if (!strcasecmp(value, "patience")) + return XDF_PATIENCE_DIFF; + else if (!strcasecmp(value, "histogram")) + return XDF_HISTOGRAM_DIFF; + return -1; +} + /* * These are to give UI layer defaults. * The core-level commands such as git-diff-files should @@ -140,6 +171,12 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) diff_use_color_default = git_config_colorbool(var, value); return 0; } + if (!strcmp(var, "diff.context")) { + diff_context_default = git_config_int(var, value); + if (diff_context_default < 0) + return -1; + return 0; + } if (!strcmp(var, "diff.renames")) { diff_detect_rename_default = git_config_rename(var, value); return 0; @@ -156,6 +193,10 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) diff_no_prefix = git_config_bool(var, value); return 0; } + if (!strcmp(var, "diff.statgraphwidth")) { + diff_stat_graph_width = git_config_int(var, value); + return 0; + } if (!strcmp(var, "diff.external")) return git_config_string(&external_diff_cmd_cfg, var, value); if (!strcmp(var, "diff.wordregex")) @@ -164,6 +205,20 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) if (!strcmp(var, "diff.ignoresubmodules")) handle_ignore_submodules_arg(&default_diff_options, value); + if (!strcmp(var, "diff.submodule")) { + if (parse_submodule_params(&default_diff_options, value)) + warning(_("Unknown value for 'diff.submodule' config variable: '%s'"), + value); + return 0; + } + + if (!strcmp(var, "diff.algorithm")) { + diff_algorithm = parse_algorithm_value(value); + if (diff_algorithm < 0) + return -1; + return 0; + } + if (git_color_config(var, value, cb) < 0) return -1; @@ -177,11 +232,8 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) return 0; } - switch (userdiff_config(var, value)) { - case 0: break; - case -1: return -1; - default: return 0; - } + if (userdiff_config(var, value) < 0) + return -1; if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) { int slot = parse_diff_color_slot(var, 11); @@ -373,12 +425,7 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res int nofirst; FILE *file = o->file; - if (o->output_prefix) { - struct strbuf *msg = NULL; - msg = o->output_prefix(o, o->output_prefix_data); - assert(msg); - fwrite(msg->buf, msg->len, 1, file); - } + fputs(diff_line_prefix(o), file); if (len == 0) { has_trailing_newline = (first == '\n'); @@ -572,6 +619,7 @@ static void emit_rewrite_lines(struct emit_callback *ecb, if (!endp) { const char *plain = diff_get_color(ecb->color_diff, DIFF_PLAIN); + putc('\n', ecb->opt->file); emit_line_0(ecb->opt, plain, reset, '\\', nneof, strlen(nneof)); } @@ -595,13 +643,7 @@ static void emit_rewrite_diff(const char *name_a, char *data_one, *data_two; size_t size_one, size_two; struct emit_callback ecbdata; - char *line_prefix = ""; - struct strbuf *msgbuf; - - if (o && o->output_prefix) { - msgbuf = o->output_prefix(o, o->output_prefix_data); - line_prefix = msgbuf->buf; - } + const char *line_prefix = diff_line_prefix(o); if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) { a_prefix = o->b_prefix; @@ -627,7 +669,7 @@ static void emit_rewrite_diff(const char *name_a, memset(&ecbdata, 0, sizeof(ecbdata)); ecbdata.color_diff = want_color(o->use_color); ecbdata.found_changesp = &o->found_changes; - ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); + ecbdata.ws_rule = whitespace_rule(name_b); ecbdata.opt = o; if (ecbdata.ws_rule & WS_BLANK_AT_EOF) { mmfile_t mf1, mf2; @@ -797,18 +839,14 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) int minus_first, minus_len, plus_first, plus_len; const char *minus_begin, *minus_end, *plus_begin, *plus_end; struct diff_options *opt = diff_words->opt; - struct strbuf *msgbuf; - char *line_prefix = ""; + const char *line_prefix; if (line[0] != '@' || parse_hunk_header(line, len, &minus_first, &minus_len, &plus_first, &plus_len)) return; assert(opt); - if (opt->output_prefix) { - msgbuf = opt->output_prefix(opt, opt->output_prefix_data); - line_prefix = msgbuf->buf; - } + line_prefix = diff_line_prefix(opt); /* POSIX requires that first be decremented by one if len == 0... */ if (minus_len) { @@ -932,14 +970,10 @@ static void diff_words_show(struct diff_words_data *diff_words) struct diff_words_style *style = diff_words->style; struct diff_options *opt = diff_words->opt; - struct strbuf *msgbuf; - char *line_prefix = ""; + const char *line_prefix; assert(opt); - if (opt->output_prefix) { - msgbuf = opt->output_prefix(opt, opt->output_prefix_data); - line_prefix = msgbuf->buf; - } + line_prefix = diff_line_prefix(opt); /* special case: only removal */ if (!diff_words->plus.text.size) { @@ -987,10 +1021,74 @@ static void diff_words_flush(struct emit_callback *ecbdata) diff_words_show(ecbdata->diff_words); } +static void diff_filespec_load_driver(struct diff_filespec *one) +{ + /* Use already-loaded driver */ + if (one->driver) + return; + + if (S_ISREG(one->mode)) + one->driver = userdiff_find_by_path(one->path); + + /* Fallback to default settings */ + if (!one->driver) + one->driver = userdiff_find_by_name("default"); +} + +static const char *userdiff_word_regex(struct diff_filespec *one) +{ + diff_filespec_load_driver(one); + return one->driver->word_regex; +} + +static void init_diff_words_data(struct emit_callback *ecbdata, + struct diff_options *orig_opts, + struct diff_filespec *one, + struct diff_filespec *two) +{ + int i; + struct diff_options *o = xmalloc(sizeof(struct diff_options)); + memcpy(o, orig_opts, sizeof(struct diff_options)); + + ecbdata->diff_words = + xcalloc(1, sizeof(struct diff_words_data)); + ecbdata->diff_words->type = o->word_diff; + ecbdata->diff_words->opt = o; + if (!o->word_regex) + o->word_regex = userdiff_word_regex(one); + if (!o->word_regex) + o->word_regex = userdiff_word_regex(two); + if (!o->word_regex) + o->word_regex = diff_word_regex_cfg; + if (o->word_regex) { + ecbdata->diff_words->word_regex = (regex_t *) + xmalloc(sizeof(regex_t)); + if (regcomp(ecbdata->diff_words->word_regex, + o->word_regex, + REG_EXTENDED | REG_NEWLINE)) + die ("Invalid regular expression: %s", + o->word_regex); + } + for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) { + if (o->word_diff == diff_words_styles[i].type) { + ecbdata->diff_words->style = + &diff_words_styles[i]; + break; + } + } + if (want_color(o->use_color)) { + struct diff_words_style *st = ecbdata->diff_words->style; + st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD); + st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW); + st->ctx.color = diff_get_color_opt(o, DIFF_PLAIN); + } +} + static void free_diff_words_data(struct emit_callback *ecbdata) { if (ecbdata->diff_words) { diff_words_flush(ecbdata); + free (ecbdata->diff_words->opt); free (ecbdata->diff_words->minus.text.ptr); free (ecbdata->diff_words->minus.orig); free (ecbdata->diff_words->plus.text.ptr); @@ -1011,6 +1109,16 @@ const char *diff_get_color(int diff_use_color, enum color_diff ix) return ""; } +const char *diff_line_prefix(struct diff_options *opt) +{ + struct strbuf *msgbuf; + if (!opt->output_prefix) + return ""; + + msgbuf = opt->output_prefix(opt, opt->output_prefix_data); + return msgbuf->buf; +} + static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len) { const char *cp; @@ -1051,13 +1159,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN); const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); struct diff_options *o = ecbdata->opt; - char *line_prefix = ""; - struct strbuf *msgbuf; - - if (o && o->output_prefix) { - msgbuf = o->output_prefix(o, o->output_prefix_data); - line_prefix = msgbuf->buf; - } + const char *line_prefix = diff_line_prefix(o); if (ecbdata->header) { fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf); @@ -1162,6 +1264,7 @@ static char *pprint_rename(const char *a, const char *b) const char *new = b; struct strbuf name = STRBUF_INIT; int pfx_length, sfx_length; + int pfx_adjust_for_slash; int len_a = strlen(a); int len_b = strlen(b); int a_midlen, b_midlen; @@ -1188,7 +1291,18 @@ static char *pprint_rename(const char *a, const char *b) old = a + len_a; new = b + len_b; sfx_length = 0; - while (a <= old && b <= new && *old == *new) { + /* + * If there is a common prefix, it must end in a slash. In + * that case we let this loop run 1 into the prefix to see the + * same slash. + * + * If there is no common prefix, we cannot do this as it would + * underrun the input strings. + */ + pfx_adjust_for_slash = (pfx_length ? 1 : 0); + while (a + pfx_length - pfx_adjust_for_slash <= old && + b + pfx_length - pfx_adjust_for_slash <= new && + *old == *new) { if (*old == '/') sfx_length = len_a - (old - a); old--; @@ -1233,6 +1347,7 @@ struct diffstat_t { unsigned is_unmerged:1; unsigned is_binary:1; unsigned is_renamed:1; + unsigned is_interesting:1; uintmax_t added, deleted; } **files; }; @@ -1331,11 +1446,11 @@ int print_stat_summary(FILE *fp, int files, int insertions, int deletions) if (!files) { assert(insertions == 0 && deletions == 0); - return fputs(_(" 0 files changed\n"), fp); + return fprintf(fp, "%s\n", " 0 files changed"); } strbuf_addf(&sb, - Q_(" %d file changed", " %d files changed", files), + (files == 1) ? " %d file changed" : " %d files changed", files); /* @@ -1352,8 +1467,7 @@ int print_stat_summary(FILE *fp, int files, int insertions, int deletions) * do not translate it. */ strbuf_addf(&sb, - Q_(", %d insertion(+)", ", %d insertions(+)", - insertions), + (insertions == 1) ? ", %d insertion(+)" : ", %d insertions(+)", insertions); } @@ -1363,8 +1477,7 @@ int print_stat_summary(FILE *fp, int files, int insertions, int deletions) * do not translate it. */ strbuf_addf(&sb, - Q_(", %d deletion(-)", ", %d deletions(-)", - deletions), + (deletions == 1) ? ", %d deletion(-)" : ", %d deletions(-)", deletions); } strbuf_addch(&sb, '\n'); @@ -1377,45 +1490,30 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) { int i, len, add, del, adds = 0, dels = 0; uintmax_t max_change = 0, max_len = 0; - int total_files = data->nr; - int width, name_width, count; + int total_files = data->nr, count; + int width, name_width, graph_width, number_width = 0, bin_width = 0; const char *reset, *add_c, *del_c; const char *line_prefix = ""; int extra_shown = 0; - struct strbuf *msg = NULL; if (data->nr == 0) return; - if (options->output_prefix) { - msg = options->output_prefix(options, options->output_prefix_data); - line_prefix = msg->buf; - } - - width = options->stat_width ? options->stat_width : 80; - name_width = options->stat_name_width ? options->stat_name_width : 50; + line_prefix = diff_line_prefix(options); count = options->stat_count ? options->stat_count : data->nr; - /* Sanity: give at least 5 columns to the graph, - * but leave at least 10 columns for the name. - */ - if (width < 25) - width = 25; - if (name_width < 10) - name_width = 10; - else if (width < name_width + 15) - name_width = width - 15; - - /* Find the longest filename and max number of changes */ reset = diff_get_color_opt(options, DIFF_RESET); add_c = diff_get_color_opt(options, DIFF_FILE_NEW); del_c = diff_get_color_opt(options, DIFF_FILE_OLD); + /* + * Find the longest filename and max number of changes + */ for (i = 0; (i < count) && (i < data->nr); i++) { struct diffstat_file *file = data->files[i]; uintmax_t change = file->added + file->deleted; - if (!data->files[i]->is_renamed && - (change == 0)) { + + if (!file->is_interesting && (change == 0)) { count++; /* not shown == room for one more */ continue; } @@ -1424,38 +1522,121 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) if (max_len < len) max_len = len; - if (file->is_binary || file->is_unmerged) + if (file->is_unmerged) { + /* "Unmerged" is 8 characters */ + bin_width = bin_width < 8 ? 8 : bin_width; + continue; + } + if (file->is_binary) { + /* "Bin XXX -> YYY bytes" */ + int w = 14 + decimal_width(file->added) + + decimal_width(file->deleted); + bin_width = bin_width < w ? w : bin_width; + /* Display change counts aligned with "Bin" */ + number_width = 3; continue; + } + if (max_change < change) max_change = change; } - count = i; /* min(count, data->nr) */ + count = i; /* where we can stop scanning in data->files[] */ - /* Compute the width of the graph part; - * 10 is for one blank at the beginning of the line plus - * " | count " between the name and the graph. + /* + * We have width = stat_width or term_columns() columns total. + * We want a maximum of min(max_len, stat_name_width) for the name part. + * We want a maximum of min(max_change, stat_graph_width) for the +- part. + * We also need 1 for " " and 4 + decimal_width(max_change) + * for " | NNNN " and one the empty column at the end, altogether + * 6 + decimal_width(max_change). * - * From here on, name_width is the width of the name area, - * and width is the width of the graph area. + * If there's not enough space, we will use the smaller of + * stat_name_width (if set) and 5/8*width for the filename, + * and the rest for constant elements + graph part, but no more + * than stat_graph_width for the graph part. + * (5/8 gives 50 for filename and 30 for the constant parts + graph + * for the standard terminal size). + * + * In other words: stat_width limits the maximum width, and + * stat_name_width fixes the maximum width of the filename, + * and is also used to divide available columns if there + * aren't enough. + * + * Binary files are displayed with "Bin XXX -> YYY bytes" + * instead of the change count and graph. This part is treated + * similarly to the graph part, except that it is not + * "scaled". If total width is too small to accommodate the + * guaranteed minimum width of the filename part and the + * separators and this message, this message will "overflow" + * making the line longer than the maximum width. */ - name_width = (name_width < max_len) ? name_width : max_len; - if (width < (name_width + 10) + max_change) - width = width - (name_width + 10); + + if (options->stat_width == -1) + width = term_columns() - options->output_prefix_length; else - width = max_change; + width = options->stat_width ? options->stat_width : 80; + number_width = decimal_width(max_change) > number_width ? + decimal_width(max_change) : number_width; + + if (options->stat_graph_width == -1) + options->stat_graph_width = diff_stat_graph_width; + /* + * Guarantee 3/8*16==6 for the graph part + * and 5/8*16==10 for the filename part + */ + if (width < 16 + 6 + number_width) + width = 16 + 6 + number_width; + + /* + * First assign sizes that are wanted, ignoring available width. + * strlen("Bin XXX -> YYY bytes") == bin_width, and the part + * starting from "XXX" should fit in graph_width. + */ + graph_width = max_change + 4 > bin_width ? max_change : bin_width - 4; + if (options->stat_graph_width && + options->stat_graph_width < graph_width) + graph_width = options->stat_graph_width; + + name_width = (options->stat_name_width > 0 && + options->stat_name_width < max_len) ? + options->stat_name_width : max_len; + + /* + * Adjust adjustable widths not to exceed maximum width + */ + if (name_width + number_width + 6 + graph_width > width) { + if (graph_width > width * 3/8 - number_width - 6) { + graph_width = width * 3/8 - number_width - 6; + if (graph_width < 6) + graph_width = 6; + } + + if (options->stat_graph_width && + graph_width > options->stat_graph_width) + graph_width = options->stat_graph_width; + if (name_width > width - number_width - 6 - graph_width) + name_width = width - number_width - 6 - graph_width; + else + graph_width = width - number_width - 6 - name_width; + } + + /* + * From here name_width is the width of the name area, + * and graph_width is the width of the graph area. + * max_change is used to scale graph properly. + */ for (i = 0; i < count; i++) { const char *prefix = ""; - char *name = data->files[i]->print_name; - uintmax_t added = data->files[i]->added; - uintmax_t deleted = data->files[i]->deleted; + struct diffstat_file *file = data->files[i]; + char *name = file->print_name; + uintmax_t added = file->added; + uintmax_t deleted = file->deleted; int name_len; - if (!data->files[i]->is_renamed && - (added + deleted == 0)) { - total_files--; + if (!file->is_interesting && (added + deleted == 0)) continue; - } + /* * "scale" the filename */ @@ -1471,11 +1652,15 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) name = slash; } - if (data->files[i]->is_binary) { + if (file->is_binary) { fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); - fprintf(options->file, " Bin "); - fprintf(options->file, "%s%"PRIuMAX"%s", + fprintf(options->file, " %*s", number_width, "Bin"); + if (!added && !deleted) { + putc('\n', options->file); + continue; + } + fprintf(options->file, " %s%"PRIuMAX"%s", del_c, deleted, reset); fprintf(options->file, " -> "); fprintf(options->file, "%s%"PRIuMAX"%s", @@ -1484,10 +1669,10 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) fprintf(options->file, "\n"); continue; } - else if (data->files[i]->is_unmerged) { + else if (file->is_unmerged) { fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); - fprintf(options->file, " Unmerged\n"); + fprintf(options->file, " Unmerged\n"); continue; } @@ -1496,42 +1681,47 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) */ add = added; del = deleted; - adds += add; - dels += del; - if (width <= max_change) { - int total = add + del; - - total = scale_linear(add + del, width, max_change); + if (graph_width <= max_change) { + int total = scale_linear(add + del, graph_width, max_change); if (total < 2 && add && del) /* width >= 2 due to the sanity check */ total = 2; if (add < del) { - add = scale_linear(add, width, max_change); + add = scale_linear(add, graph_width, max_change); del = total - add; } else { - del = scale_linear(del, width, max_change); + del = scale_linear(del, graph_width, max_change); add = total - del; } } fprintf(options->file, "%s", line_prefix); show_name(options->file, prefix, name, len); - fprintf(options->file, "%5"PRIuMAX"%s", added + deleted, - added + deleted ? " " : ""); + fprintf(options->file, " %*"PRIuMAX"%s", + number_width, added + deleted, + added + deleted ? " " : ""); show_graph(options->file, '+', add, add_c, reset); show_graph(options->file, '-', del, del_c, reset); fprintf(options->file, "\n"); } - for (i = count; i < data->nr; i++) { - uintmax_t added = data->files[i]->added; - uintmax_t deleted = data->files[i]->deleted; - if (!data->files[i]->is_renamed && - (added + deleted == 0)) { + + for (i = 0; i < data->nr; i++) { + struct diffstat_file *file = data->files[i]; + uintmax_t added = file->added; + uintmax_t deleted = file->deleted; + + if (file->is_unmerged || + (!file->is_interesting && (added + deleted == 0))) { total_files--; continue; } - adds += added; - dels += deleted; + + if (!file->is_binary) { + adds += added; + dels += deleted; + } + if (i < count) + continue; if (!extra_shown) fprintf(options->file, "%s ...\n", line_prefix); extra_shown = 1; @@ -1548,25 +1738,18 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option return; for (i = 0; i < data->nr; i++) { - if (!data->files[i]->is_binary && - !data->files[i]->is_unmerged) { - int added = data->files[i]->added; - int deleted= data->files[i]->deleted; - if (!data->files[i]->is_renamed && - (added + deleted == 0)) { - total_files--; - } else { - adds += added; - dels += deleted; - } + int added = data->files[i]->added; + int deleted= data->files[i]->deleted; + + if (data->files[i]->is_unmerged || + (!data->files[i]->is_interesting && (added + deleted == 0))) { + total_files--; + } else if (!data->files[i]->is_binary) { /* don't count bytes */ + adds += added; + dels += deleted; } } - if (options->output_prefix) { - struct strbuf *msg = NULL; - msg = options->output_prefix(options, - options->output_prefix_data); - fprintf(options->file, "%s", msg->buf); - } + fprintf(options->file, "%s", diff_line_prefix(options)); print_stat_summary(options->file, total_files, adds, dels); } @@ -1580,12 +1763,7 @@ static void show_numstat(struct diffstat_t *data, struct diff_options *options) for (i = 0; i < data->nr; i++) { struct diffstat_file *file = data->files[i]; - if (options->output_prefix) { - struct strbuf *msg = NULL; - msg = options->output_prefix(options, - options->output_prefix_data); - fprintf(options->file, "%s", msg->buf); - } + fprintf(options->file, "%s", diff_line_prefix(options)); if (file->is_binary) fprintf(options->file, "-\t-\t"); @@ -1627,13 +1805,7 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir, { unsigned long this_dir = 0; unsigned int sources = 0; - const char *line_prefix = ""; - struct strbuf *msg = NULL; - - if (opt->output_prefix) { - msg = opt->output_prefix(opt, opt->output_prefix_data); - line_prefix = msg->buf; - } + const char *line_prefix = diff_line_prefix(opt); while (dir->nr) { struct dirstat_file *f = dir->files; @@ -1883,15 +2055,10 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) const char *reset = diff_get_color(data->o->use_color, DIFF_RESET); const char *set = diff_get_color(data->o->use_color, DIFF_FILE_NEW); char *err; - char *line_prefix = ""; - struct strbuf *msgbuf; + const char *line_prefix; assert(data->o); - if (data->o->output_prefix) { - msgbuf = data->o->output_prefix(data->o, - data->o->output_prefix_data); - line_prefix = msgbuf->buf; - } + line_prefix = diff_line_prefix(data->o); if (line[0] == '+') { unsigned bad; @@ -1948,7 +2115,8 @@ static unsigned char *deflate_it(char *data, return deflated; } -static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix) +static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, + const char *prefix) { void *cp; void *delta; @@ -2009,27 +2177,14 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char free(data); } -static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix) +static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, + const char *prefix) { fprintf(file, "%sGIT binary patch\n", prefix); emit_binary_diff_body(file, one, two, prefix); emit_binary_diff_body(file, two, one, prefix); } -static void diff_filespec_load_driver(struct diff_filespec *one) -{ - /* Use already-loaded driver */ - if (one->driver) - return; - - if (S_ISREG(one->mode)) - one->driver = userdiff_find_by_path(one->path); - - /* Fallback to default settings */ - if (!one->driver) - one->driver = userdiff_find_by_name("default"); -} - int diff_filespec_is_binary(struct diff_filespec *one) { if (one->is_binary == -1) { @@ -2055,12 +2210,6 @@ static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespe return one->driver->funcname.pattern ? &one->driver->funcname : NULL; } -static const char *userdiff_word_regex(struct diff_filespec *one) -{ - diff_filespec_load_driver(one); - return one->driver->word_regex; -} - void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b) { if (!options->a_prefix) @@ -2090,28 +2239,23 @@ static void builtin_diff(const char *name_a, mmfile_t mf1, mf2; const char *lbl[2]; char *a_one, *b_two; - const char *set = diff_get_color_opt(o, DIFF_METAINFO); + const char *meta = diff_get_color_opt(o, DIFF_METAINFO); const char *reset = diff_get_color_opt(o, DIFF_RESET); const char *a_prefix, *b_prefix; struct userdiff_driver *textconv_one = NULL; struct userdiff_driver *textconv_two = NULL; struct strbuf header = STRBUF_INIT; - struct strbuf *msgbuf; - char *line_prefix = ""; - - if (o->output_prefix) { - msgbuf = o->output_prefix(o, o->output_prefix_data); - line_prefix = msgbuf->buf; - } + const char *line_prefix = diff_line_prefix(o); if (DIFF_OPT_TST(o, SUBMODULE_LOG) && (!one->mode || S_ISGITLINK(one->mode)) && (!two->mode || S_ISGITLINK(two->mode))) { const char *del = diff_get_color_opt(o, DIFF_FILE_OLD); const char *add = diff_get_color_opt(o, DIFF_FILE_NEW); - show_submodule_summary(o->file, one ? one->path : two->path, + show_submodule_summary(o->file, one->path ? one->path : two->path, + line_prefix, one->sha1, two->sha1, two->dirty_submodule, - del, add, reset); + meta, del, add, reset); return; } @@ -2137,24 +2281,24 @@ static void builtin_diff(const char *name_a, b_two = quote_two(b_prefix, name_b + (*name_b == '/')); lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; - strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset); + strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, meta, a_one, b_two, reset); if (lbl[0][0] == '/') { /* /dev/null */ - strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset); + strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, meta, two->mode, reset); if (xfrm_msg) strbuf_addstr(&header, xfrm_msg); must_show_header = 1; } else if (lbl[1][0] == '/') { - strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset); + strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, meta, one->mode, reset); if (xfrm_msg) strbuf_addstr(&header, xfrm_msg); must_show_header = 1; } else { if (one->mode != two->mode) { - strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset); - strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset); + strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, meta, one->mode, reset); + strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, meta, two->mode, reset); must_show_header = 1; } if (xfrm_msg) @@ -2228,7 +2372,7 @@ static void builtin_diff(const char *name_a, ecbdata.label_path = lbl; ecbdata.color_diff = want_color(o->use_color); ecbdata.found_changesp = &o->found_changes; - ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); + ecbdata.ws_rule = whitespace_rule(name_b); if (ecbdata.ws_rule & WS_BLANK_AT_EOF) check_blank_at_eof(&mf1, &mf2, &ecbdata); ecbdata.opt = o; @@ -2247,42 +2391,8 @@ static void builtin_diff(const char *name_a, xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10); else if (!prefixcmp(diffopts, "-u")) xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10); - if (o->word_diff) { - int i; - - ecbdata.diff_words = - xcalloc(1, sizeof(struct diff_words_data)); - ecbdata.diff_words->type = o->word_diff; - ecbdata.diff_words->opt = o; - if (!o->word_regex) - o->word_regex = userdiff_word_regex(one); - if (!o->word_regex) - o->word_regex = userdiff_word_regex(two); - if (!o->word_regex) - o->word_regex = diff_word_regex_cfg; - if (o->word_regex) { - ecbdata.diff_words->word_regex = (regex_t *) - xmalloc(sizeof(regex_t)); - if (regcomp(ecbdata.diff_words->word_regex, - o->word_regex, - REG_EXTENDED | REG_NEWLINE)) - die ("Invalid regular expression: %s", - o->word_regex); - } - for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) { - if (o->word_diff == diff_words_styles[i].type) { - ecbdata.diff_words->style = - &diff_words_styles[i]; - break; - } - } - if (want_color(o->use_color)) { - struct diff_words_style *st = ecbdata.diff_words->style; - st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD); - st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW); - st->ctx.color = diff_get_color_opt(o, DIFF_PLAIN); - } - } + if (o->word_diff) + init_diff_words_data(&ecbdata, o, one, two); xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata, &xpp, &xecfg); if (o->word_diff) @@ -2308,22 +2418,37 @@ static void builtin_diffstat(const char *name_a, const char *name_b, struct diff_filespec *two, struct diffstat_t *diffstat, struct diff_options *o, - int complete_rewrite) + struct diff_filepair *p) { mmfile_t mf1, mf2; struct diffstat_file *data; + int same_contents; + int complete_rewrite = 0; + + if (!DIFF_PAIR_UNMERGED(p)) { + if (p->status == DIFF_STATUS_MODIFIED && p->score) + complete_rewrite = 1; + } data = diffstat_add(diffstat, name_a, name_b); + data->is_interesting = p->status != DIFF_STATUS_UNKNOWN; if (!one || !two) { data->is_unmerged = 1; return; } + same_contents = !hashcmp(one->sha1, two->sha1); + if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) { data->is_binary = 1; - data->added = diff_filespec_size(two); - data->deleted = diff_filespec_size(one); + if (same_contents) { + data->added = 0; + data->deleted = 0; + } else { + data->added = diff_filespec_size(two); + data->deleted = diff_filespec_size(one); + } } else if (complete_rewrite) { @@ -2333,7 +2458,7 @@ static void builtin_diffstat(const char *name_a, const char *name_b, data->added = count_lines(two->data, two->size); } - else { + else if (!same_contents) { /* Crazy xdl interfaces.. */ xpparam_t xpp; xdemitconf_t xecfg; @@ -2459,7 +2584,7 @@ void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1, */ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file) { - struct cache_entry *ce; + const struct cache_entry *ce; struct stat st; int pos, len; @@ -2521,22 +2646,6 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int return 0; } -static int populate_from_stdin(struct diff_filespec *s) -{ - struct strbuf buf = STRBUF_INIT; - size_t size = 0; - - if (strbuf_read(&buf, 0, 0) < 0) - return error("error while reading from stdin %s", - strerror(errno)); - - s->should_munmap = 0; - s->data = strbuf_detach(&buf, &size); - s->size = size; - s->should_free = 1; - return 0; -} - static int diff_populate_gitlink(struct diff_filespec *s, int size_only) { int len; @@ -2566,6 +2675,14 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only) int diff_populate_filespec(struct diff_filespec *s, int size_only) { int err = 0; + /* + * demote FAIL to WARN to allow inspecting the situation + * instead of refusing. + */ + enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL + ? SAFE_CRLF_WARN + : safe_crlf); + if (!DIFF_FILE_VALID(s)) die("internal error: asking to populate invalid file."); if (S_ISDIR(s->mode)) @@ -2586,9 +2703,6 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only) struct stat st; int fd; - if (!strcmp(s->path, "-")) - return populate_from_stdin(s); - if (lstat(s->path, &st) < 0) { if (errno == ENOENT) { err_empty: @@ -2624,7 +2738,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only) /* * Convert from working tree format to canonical git format */ - if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) { + if (convert_to_git(s->path, s->data, s->size, &buf, crlf_warn)) { size_t size = 0; munmap(s->data, s->size); s->should_munmap = 0; @@ -2839,14 +2953,9 @@ static void fill_metainfo(struct strbuf *msg, { const char *set = diff_get_color(use_color, DIFF_METAINFO); const char *reset = diff_get_color(use_color, DIFF_RESET); - struct strbuf *msgbuf; - char *line_prefix = ""; + const char *line_prefix = diff_line_prefix(o); *must_show_header = 1; - if (o->output_prefix) { - msgbuf = o->output_prefix(o, o->output_prefix_data); - line_prefix = msgbuf->buf; - } strbuf_init(msg, PATH_MAX * 2 + 300); switch (p->status) { case DIFF_STATUS_COPIED: @@ -2913,9 +3022,8 @@ static void run_diff_cmd(const char *pgm, int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score; int must_show_header = 0; - if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) - pgm = NULL; - else { + + if (DIFF_OPT_TST(o, ALLOW_EXTERNAL)) { struct userdiff_driver *drv = userdiff_find_by_path(attr_path); if (drv && drv->external) pgm = drv->external; @@ -2950,7 +3058,7 @@ static void diff_fill_sha1_info(struct diff_filespec *one) if (DIFF_FILE_VALID(one)) { if (!one->sha1_valid) { struct stat st; - if (!strcmp(one->path, "-")) { + if (one->is_stdin) { hashcpy(one->sha1, null_sha1); return; } @@ -2995,6 +3103,9 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) if (o->prefix_length) strip_prefix(o->prefix_length, &name, &other); + if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) + pgm = NULL; + if (DIFF_PAIR_UNMERGED(p)) { run_diff_cmd(pgm, name, NULL, attr_path, NULL, NULL, NULL, o, p); @@ -3034,11 +3145,10 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o, { const char *name; const char *other; - int complete_rewrite = 0; if (DIFF_PAIR_UNMERGED(p)) { /* unmerged */ - builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, 0); + builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p); return; } @@ -3051,9 +3161,7 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o, diff_fill_sha1_info(p->one); diff_fill_sha1_info(p->two); - if (p->status == DIFF_STATUS_MODIFIED && p->score) - complete_rewrite = 1; - builtin_diffstat(name, other, p->one, p->two, diffstat, o, complete_rewrite); + builtin_diffstat(name, other, p->one, p->two, diffstat, o, p); } static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) @@ -3090,12 +3198,14 @@ void diff_setup(struct diff_options *options) options->break_opt = -1; options->rename_limit = -1; options->dirstat_permille = diff_dirstat_permille_default; - options->context = 3; + options->context = diff_context_default; + DIFF_OPT_SET(options, RENAME_EMPTY); options->change = diff_change; options->add_remove = diff_addremove; options->use_color = diff_use_color_default; options->detect_rename = diff_detect_rename_default; + options->xdl_opts |= diff_algorithm; if (diff_no_prefix) { options->a_prefix = options->b_prefix = ""; @@ -3105,10 +3215,13 @@ void diff_setup(struct diff_options *options) } } -int diff_setup_done(struct diff_options *options) +void diff_setup_done(struct diff_options *options) { int count = 0; + if (options->set_default) + options->set_default(options); + if (options->output_format & DIFF_FORMAT_NAME) count++; if (options->output_format & DIFF_FORMAT_NAME_STATUS) @@ -3204,8 +3317,6 @@ int diff_setup_done(struct diff_options *options) options->output_format = DIFF_FORMAT_NO_OUTPUT; DIFF_OPT_SET(options, EXIT_WITH_STATUS); } - - return 0; } static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) @@ -3302,6 +3413,7 @@ static int stat_opt(struct diff_options *options, const char **av) char *end; int width = options->stat_width; int name_width = options->stat_name_width; + int graph_width = options->stat_graph_width; int count = options->stat_count; int argcount = 1; @@ -3330,6 +3442,16 @@ static int stat_opt(struct diff_options *options, const char **av) name_width = strtoul(av[1], &end, 10); argcount = 2; } + } else if (!prefixcmp(arg, "-graph-width")) { + arg += strlen("-graph-width"); + if (*arg == '=') + graph_width = strtoul(arg + 1, &end, 10); + else if (!*arg && !av[1]) + die("Option '--stat-graph-width' requires a value"); + else if (!*arg) { + graph_width = strtoul(av[1], &end, 10); + argcount = 2; + } } else if (!prefixcmp(arg, "-count")) { arg += strlen("-count"); if (*arg == '=') @@ -3355,6 +3477,7 @@ static int stat_opt(struct diff_options *options, const char **av) return 0; options->output_format |= DIFF_FORMAT_DIFFSTAT; options->stat_name_width = name_width; + options->stat_graph_width = graph_width; options->stat_width = width; options->stat_count = count; return argcount; @@ -3375,6 +3498,101 @@ static int parse_dirstat_opt(struct diff_options *options, const char *params) return 1; } +static int parse_submodule_opt(struct diff_options *options, const char *value) +{ + if (parse_submodule_params(options, value)) + die(_("Failed to parse --submodule option parameter: '%s'"), + value); + return 1; +} + +static const char diff_status_letters[] = { + DIFF_STATUS_ADDED, + DIFF_STATUS_COPIED, + DIFF_STATUS_DELETED, + DIFF_STATUS_MODIFIED, + DIFF_STATUS_RENAMED, + DIFF_STATUS_TYPE_CHANGED, + DIFF_STATUS_UNKNOWN, + DIFF_STATUS_UNMERGED, + DIFF_STATUS_FILTER_AON, + DIFF_STATUS_FILTER_BROKEN, + '\0', +}; + +static unsigned int filter_bit['Z' + 1]; + +static void prepare_filter_bits(void) +{ + int i; + + if (!filter_bit[DIFF_STATUS_ADDED]) { + for (i = 0; diff_status_letters[i]; i++) + filter_bit[(int) diff_status_letters[i]] = (1 << i); + } +} + +static unsigned filter_bit_tst(char status, const struct diff_options *opt) +{ + return opt->filter & filter_bit[(int) status]; +} + +static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt) +{ + int i, optch; + + prepare_filter_bits(); + + /* + * If there is a negation e.g. 'd' in the input, and we haven't + * initialized the filter field with another --diff-filter, start + * from full set of bits, except for AON. + */ + if (!opt->filter) { + for (i = 0; (optch = optarg[i]) != '\0'; i++) { + if (optch < 'a' || 'z' < optch) + continue; + opt->filter = (1 << (ARRAY_SIZE(diff_status_letters) - 1)) - 1; + opt->filter &= ~filter_bit[DIFF_STATUS_FILTER_AON]; + break; + } + } + + for (i = 0; (optch = optarg[i]) != '\0'; i++) { + unsigned int bit; + int negate; + + if ('a' <= optch && optch <= 'z') { + negate = 1; + optch = toupper(optch); + } else { + negate = 0; + } + + bit = (0 <= optch && optch <= 'Z') ? filter_bit[optch] : 0; + if (!bit) + return optarg[i]; + if (negate) + opt->filter &= ~bit; + else + opt->filter |= bit; + } + return 0; +} + +/* Used only by "diff-files" and "diff --no-index" */ +void handle_deprecated_show_diff_q(struct diff_options *opt) +{ + warning("'diff -q' and 'diff-files -q' are deprecated."); + warning("Use 'diff --diff-filter=d' instead to ignore deleted filepairs."); + parse_diff_filter_opt("d", opt); +} + +static void enable_patch_output(int *fmt) { + *fmt &= ~DIFF_FORMAT_NO_OUTPUT; + *fmt |= DIFF_FORMAT_PATCH; +} + int diff_opt_parse(struct diff_options *options, const char **av, int ac) { const char *arg = av[0]; @@ -3382,15 +3600,15 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) int argcount; /* Output format options */ - if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")) - options->output_format |= DIFF_FORMAT_PATCH; - else if (opt_arg(arg, 'U', "unified", &options->context)) - options->output_format |= DIFF_FORMAT_PATCH; + if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch") + || opt_arg(arg, 'U', "unified", &options->context)) + enable_patch_output(&options->output_format); else if (!strcmp(arg, "--raw")) options->output_format |= DIFF_FORMAT_RAW; - else if (!strcmp(arg, "--patch-with-raw")) - options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW; - else if (!strcmp(arg, "--numstat")) + else if (!strcmp(arg, "--patch-with-raw")) { + enable_patch_output(&options->output_format); + options->output_format |= DIFF_FORMAT_RAW; + } else if (!strcmp(arg, "--numstat")) options->output_format |= DIFF_FORMAT_NUMSTAT; else if (!strcmp(arg, "--shortstat")) options->output_format |= DIFF_FORMAT_SHORTSTAT; @@ -3412,13 +3630,14 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) options->output_format |= DIFF_FORMAT_CHECKDIFF; else if (!strcmp(arg, "--summary")) options->output_format |= DIFF_FORMAT_SUMMARY; - else if (!strcmp(arg, "--patch-with-stat")) - options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT; - else if (!strcmp(arg, "--name-only")) + else if (!strcmp(arg, "--patch-with-stat")) { + enable_patch_output(&options->output_format); + options->output_format |= DIFF_FORMAT_DIFFSTAT; + } else if (!strcmp(arg, "--name-only")) options->output_format |= DIFF_FORMAT_NAME; else if (!strcmp(arg, "--name-status")) options->output_format |= DIFF_FORMAT_NAME_STATUS; - else if (!strcmp(arg, "-s")) + else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch")) options->output_format |= DIFF_FORMAT_NO_OUTPUT; else if (!prefixcmp(arg, "--stat")) /* --stat, --stat-width, --stat-name-width, or --stat-count */ @@ -3449,6 +3668,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) } else if (!strcmp(arg, "--no-renames")) options->detect_rename = 0; + else if (!strcmp(arg, "--rename-empty")) + DIFF_OPT_SET(options, RENAME_EMPTY); + else if (!strcmp(arg, "--no-rename-empty")) + DIFF_OPT_CLR(options, RENAME_EMPTY); else if (!strcmp(arg, "--relative")) DIFF_OPT_SET(options, RELATIVE_NAME); else if (!prefixcmp(arg, "--relative=")) { @@ -3467,14 +3690,27 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE); else if (!strcmp(arg, "--ignore-space-at-eol")) DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL); + else if (!strcmp(arg, "--ignore-blank-lines")) + DIFF_XDL_SET(options, IGNORE_BLANK_LINES); else if (!strcmp(arg, "--patience")) - DIFF_XDL_SET(options, PATIENCE_DIFF); + options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); else if (!strcmp(arg, "--histogram")) - DIFF_XDL_SET(options, HISTOGRAM_DIFF); + options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF); + else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) { + long value = parse_algorithm_value(optarg); + if (value < 0) + return error("option diff-algorithm accepts \"myers\", " + "\"minimal\", \"patience\" and \"histogram\""); + /* clear out previous settings */ + DIFF_XDL_CLR(options, NEED_MINIMAL); + options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; + options->xdl_opts |= value; + return argcount; + } /* flags options */ else if (!strcmp(arg, "--binary")) { - options->output_format |= DIFF_FORMAT_PATCH; + enable_patch_output(&options->output_format); DIFF_OPT_SET(options, BINARY); } else if (!strcmp(arg, "--full-index")) @@ -3487,6 +3723,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_OPT_SET(options, FIND_COPIES_HARDER); else if (!strcmp(arg, "--follow")) DIFF_OPT_SET(options, FOLLOW_RENAMES); + else if (!strcmp(arg, "--no-follow")) + DIFF_OPT_CLR(options, FOLLOW_RENAMES); else if (!strcmp(arg, "--color")) options->use_color = 1; else if (!prefixcmp(arg, "--color=")) { @@ -3551,10 +3789,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) handle_ignore_submodules_arg(options, arg + 20); } else if (!strcmp(arg, "--submodule")) DIFF_OPT_SET(options, SUBMODULE_LOG); - else if (!prefixcmp(arg, "--submodule=")) { - if (!strcmp(arg + 12, "log")) - DIFF_OPT_SET(options, SUBMODULE_LOG); - } + else if (!prefixcmp(arg, "--submodule=")) + return parse_submodule_opt(options, arg + 12); /* misc options */ else if (!strcmp(arg, "-z")) @@ -3581,7 +3817,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) return argcount; } else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) { - options->filter = optarg; + int offending = parse_diff_filter_opt(optarg, options); + if (offending) + die("unknown change class '%c' in --diff-filter=%s", + offending, optarg); return argcount; } else if (!strcmp(arg, "--abbrev")) @@ -3761,12 +4000,8 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt) { int line_termination = opt->line_termination; int inter_name_termination = line_termination ? '\t' : '\0'; - if (opt->output_prefix) { - struct strbuf *msg = NULL; - msg = opt->output_prefix(opt, opt->output_prefix_data); - fprintf(opt->file, "%s", msg->buf); - } + fprintf(opt->file, "%s", diff_line_prefix(opt)); if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) { fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode, diff_unique_abbrev(p->one->sha1, opt->abbrev)); @@ -4036,12 +4271,7 @@ static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_fil static void diff_summary(struct diff_options *opt, struct diff_filepair *p) { FILE *file = opt->file; - char *line_prefix = ""; - - if (opt->output_prefix) { - struct strbuf *buf = opt->output_prefix(opt, opt->output_prefix_data); - line_prefix = buf->buf; - } + const char *line_prefix = diff_line_prefix(opt); switch(p->status) { case DIFF_STATUS_DELETED: @@ -4322,7 +4552,7 @@ void diff_flush(struct diff_options *options) DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) { /* * run diff_flush_patch for the exit status. setting - * options->file to /dev/null should be safe, becaue we + * options->file to /dev/null should be safe, because we * aren't supposed to produce any output anyway. */ if (options->close_file) @@ -4342,7 +4572,9 @@ void diff_flush(struct diff_options *options) if (output_format & DIFF_FORMAT_PATCH) { if (separator) { - putc(options->line_termination, options->file); + fprintf(options->file, "%s%c", + diff_line_prefix(options), + options->line_termination); if (options->stat_sep) { /* attach patch instead of inline */ fputs(options->stat_sep, options->file); @@ -4380,27 +4612,32 @@ free_queue: } } -static void diffcore_apply_filter(const char *filter) +static int match_filter(const struct diff_options *options, const struct diff_filepair *p) +{ + return (((p->status == DIFF_STATUS_MODIFIED) && + ((p->score && + filter_bit_tst(DIFF_STATUS_FILTER_BROKEN, options)) || + (!p->score && + filter_bit_tst(DIFF_STATUS_MODIFIED, options)))) || + ((p->status != DIFF_STATUS_MODIFIED) && + filter_bit_tst(p->status, options))); +} + +static void diffcore_apply_filter(struct diff_options *options) { int i; struct diff_queue_struct *q = &diff_queued_diff; struct diff_queue_struct outq; + DIFF_QUEUE_CLEAR(&outq); - if (!filter) + if (!options->filter) return; - if (strchr(filter, DIFF_STATUS_FILTER_AON)) { + if (filter_bit_tst(DIFF_STATUS_FILTER_AON, options)) { int found; for (i = found = 0; !found && i < q->nr; i++) { - struct diff_filepair *p = q->queue[i]; - if (((p->status == DIFF_STATUS_MODIFIED) && - ((p->score && - strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || - (!p->score && - strchr(filter, DIFF_STATUS_MODIFIED)))) || - ((p->status != DIFF_STATUS_MODIFIED) && - strchr(filter, p->status))) + if (match_filter(options, q->queue[i])) found++; } if (found) @@ -4418,14 +4655,7 @@ static void diffcore_apply_filter(const char *filter) /* Only the matching ones */ for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; - - if (((p->status == DIFF_STATUS_MODIFIED) && - ((p->score && - strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || - (!p->score && - strchr(filter, DIFF_STATUS_MODIFIED)))) || - ((p->status != DIFF_STATUS_MODIFIED) && - strchr(filter, p->status))) + if (match_filter(options, p)) diff_q(&outq, p); else diff_free_filepair(p); @@ -4532,7 +4762,7 @@ void diffcore_std(struct diff_options *options) if (!options->found_follow) /* See try_to_follow_renames() in tree-diff.c */ diff_resolve_rename_copy(); - diffcore_apply_filter(options->filter); + diffcore_apply_filter(options); if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) DIFF_OPT_SET(options, HAS_CHANGES); @@ -4546,7 +4776,7 @@ int diff_result_code(struct diff_options *opt, int status) { int result = 0; - diff_warn_rename_limit("diff.renamelimit", + diff_warn_rename_limit("diff.renameLimit", opt->needed_rename_limit, opt->degraded_cc_to_c); if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && @@ -4770,3 +5000,19 @@ size_t fill_textconv(struct userdiff_driver *driver, return size; } + +void setup_diff_pager(struct diff_options *opt) +{ + /* + * If the user asked for our exit code, then either they want --quiet + * or --exit-code. We should definitely not bother with a pager in the + * former case, as we will generate no output. Since we still properly + * report our exit code even when a pager is run, we _could_ run a + * pager with --exit-code. But since we have not done so historically, + * and because it is easy to find people oneline advising "git diff + * --exit-code" in hooks and other scripts, we do not do so. + */ + if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && + check_pager_config("diff") != 0) + setup_pager(); +} |