diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 98 |
1 files changed, 83 insertions, 15 deletions
@@ -39,6 +39,7 @@ static char diff_colors[][COLOR_MAXLEN] = { GIT_COLOR_GREEN, /* NEW */ GIT_COLOR_YELLOW, /* COMMIT */ GIT_COLOR_BG_RED, /* WHITESPACE */ + GIT_COLOR_NORMAL, /* FUNCINFO */ }; static void diff_filespec_load_driver(struct diff_filespec *one); @@ -60,7 +61,9 @@ static int parse_diff_color_slot(const char *var, int ofs) return DIFF_COMMIT; if (!strcasecmp(var+ofs, "whitespace")) return DIFF_WHITESPACE; - die("bad config variable '%s'", var); + if (!strcasecmp(var+ofs, "func")) + return DIFF_FUNCINFO; + return -1; } static int git_config_rename(const char *var, const char *value) @@ -119,6 +122,8 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) { int slot = parse_diff_color_slot(var, 11); + if (slot < 0) + return 0; if (!value) return config_error_nonbool(var); color_parse(value, var, diff_colors[slot]); @@ -296,12 +301,13 @@ static void emit_line_0(FILE *file, const char *set, const char *reset, nofirst = 0; } - fputs(set, file); - - if (!nofirst) - fputc(first, file); - fwrite(line, len, 1, file); - fputs(reset, file); + if (len || !nofirst) { + fputs(set, file); + if (!nofirst) + fputc(first, file); + fwrite(line, len, 1, file); + fputs(reset, file); + } if (has_trailing_carriage_return) fputc('\r', file); if (has_trailing_newline) @@ -345,6 +351,42 @@ static void emit_add_line(const char *reset, } } +static void emit_hunk_header(struct emit_callback *ecbdata, + const char *line, int len) +{ + const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN); + const char *frag = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO); + const char *func = diff_get_color(ecbdata->color_diff, DIFF_FUNCINFO); + const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); + static const char atat[2] = { '@', '@' }; + const char *cp, *ep; + + /* + * As a hunk header must begin with "@@ -<old>, +<new> @@", + * it always is at least 10 bytes long. + */ + if (len < 10 || + memcmp(line, atat, 2) || + !(ep = memmem(line + 2, len - 2, atat, 2))) { + emit_line(ecbdata->file, plain, reset, line, len); + return; + } + ep += 2; /* skip over @@ */ + + /* The hunk header in fraginfo color */ + emit_line(ecbdata->file, frag, reset, line, ep - line); + + /* blank before the func header */ + for (cp = ep; ep - line < len; ep++) + if (*ep != ' ' && *ep != '\t') + break; + if (ep != cp) + emit_line(ecbdata->file, plain, reset, cp, ep - cp); + + if (ep < line + len) + emit_line(ecbdata->file, func, reset, ep, line + len - ep); +} + static struct diff_tempfile *claim_diff_tempfile(void) { int i; for (i = 0; i < ARRAY_SIZE(diff_temp); i++) @@ -787,9 +829,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) diff_words_flush(ecbdata); len = sane_truncate_line(ecbdata, line, len); find_lno(line, ecbdata); - emit_line(ecbdata->file, - diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO), - reset, line, len); + emit_hunk_header(ecbdata, line, len); if (line[len-1] != '\n') putc('\n', ecbdata->file); return; @@ -2530,6 +2570,20 @@ int diff_setup_done(struct diff_options *options) if (count > 1) die("--name-only, --name-status, --check and -s are mutually exclusive"); + /* + * Most of the time we can say "there are changes" + * only by checking if there are changed paths, but + * --ignore-whitespace* options force us to look + * inside contents. + */ + + if (DIFF_XDL_TST(options, IGNORE_WHITESPACE) || + DIFF_XDL_TST(options, IGNORE_WHITESPACE_CHANGE) || + DIFF_XDL_TST(options, IGNORE_WHITESPACE_AT_EOL)) + DIFF_OPT_SET(options, DIFF_FROM_CONTENTS); + else + DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS); + if (DIFF_OPT_TST(options, FIND_COPIES_HARDER)) options->detect_rename = DIFF_DETECT_COPY; @@ -2590,7 +2644,7 @@ int diff_setup_done(struct diff_options *options) * to have found. It does not make sense not to return with * exit code in such a case either. */ - if (DIFF_OPT_TST(options, QUIET)) { + if (DIFF_OPT_TST(options, QUICK)) { options->output_format = DIFF_FORMAT_NO_OUTPUT; DIFF_OPT_SET(options, EXIT_WITH_STATUS); } @@ -2781,7 +2835,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) else if (!strcmp(arg, "--exit-code")) DIFF_OPT_SET(options, EXIT_WITH_STATUS); else if (!strcmp(arg, "--quiet")) - DIFF_OPT_SET(options, QUIET); + DIFF_OPT_SET(options, QUICK); else if (!strcmp(arg, "--ext-diff")) DIFF_OPT_SET(options, ALLOW_EXTERNAL); else if (!strcmp(arg, "--no-ext-diff")) @@ -3488,6 +3542,18 @@ free_queue: q->nr = q->alloc = 0; if (options->close_file) fclose(options->file); + + /* + * Report the content-level differences with HAS_CHANGES; + * diff_addremove/diff_change does not set the bit when + * DIFF_FROM_CONTENTS is in effect (e.g. with -w). + */ + if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) { + if (options->found_changes) + DIFF_OPT_SET(options, HAS_CHANGES); + else + DIFF_OPT_CLR(options, HAS_CHANGES); + } } static void diffcore_apply_filter(const char *filter) @@ -3624,7 +3690,7 @@ void diffcore_std(struct diff_options *options) diff_resolve_rename_copy(); diffcore_apply_filter(options->filter); - if (diff_queued_diff.nr) + if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) DIFF_OPT_SET(options, HAS_CHANGES); else DIFF_OPT_CLR(options, HAS_CHANGES); @@ -3684,7 +3750,8 @@ void diff_addremove(struct diff_options *options, fill_filespec(two, sha1, mode); diff_queue(&diff_queued_diff, one, two); - DIFF_OPT_SET(options, HAS_CHANGES); + if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) + DIFF_OPT_SET(options, HAS_CHANGES); } void diff_change(struct diff_options *options, @@ -3716,7 +3783,8 @@ void diff_change(struct diff_options *options, fill_filespec(two, new_sha1, new_mode); diff_queue(&diff_queued_diff, one, two); - DIFF_OPT_SET(options, HAS_CHANGES); + if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) + DIFF_OPT_SET(options, HAS_CHANGES); } void diff_unmerge(struct diff_options *options, |