diff options
Diffstat (limited to 'utf8.c')
| -rw-r--r-- | utf8.c | 94 |
1 files changed, 82 insertions, 12 deletions
@@ -1,4 +1,5 @@ #include "git-compat-util.h" +#include "strbuf.h" #include "utf8.h" /* This code is originally from http://www.cl.cam.ac.uk/~mgk25/ucs/ */ @@ -162,7 +163,7 @@ static int git_wcwidth(ucs_char_t ch) * If the string was not a valid UTF-8, *start pointer is set to NULL * and the return value is undefined. */ -ucs_char_t pick_one_utf8_char(const char **start, size_t *remainder_p) +static ucs_char_t pick_one_utf8_char(const char **start, size_t *remainder_p) { unsigned char *s = (unsigned char *)*start; ucs_char_t ch; @@ -279,14 +280,52 @@ int is_utf8(const char *text) return 1; } -static void print_spaces(int count) +static inline void strbuf_write(struct strbuf *sb, const char *buf, int len) +{ + if (sb) + strbuf_insert(sb, sb->len, buf, len); + else + fwrite(buf, len, 1, stdout); +} + +static void print_spaces(struct strbuf *buf, int count) { static const char s[] = " "; while (count >= sizeof(s)) { - fwrite(s, sizeof(s) - 1, 1, stdout); + strbuf_write(buf, s, sizeof(s) - 1); count -= sizeof(s) - 1; } - fwrite(s, count, 1, stdout); + strbuf_write(buf, s, count); +} + +static void strbuf_add_indented_text(struct strbuf *buf, const char *text, + int indent, int indent2) +{ + if (indent < 0) + indent = 0; + while (*text) { + const char *eol = strchrnul(text, '\n'); + if (*eol == '\n') + eol++; + print_spaces(buf, indent); + strbuf_write(buf, text, eol - text); + text = eol; + indent = indent2; + } +} + +static size_t display_mode_esc_sequence_len(const char *s) +{ + const char *p = s; + if (*p++ != '\033') + return 0; + if (*p++ != '[') + return 0; + while (isdigit(*p) || *p == ';') + p++; + if (*p++ != 'm') + return 0; + return p - s; } /* @@ -295,36 +334,62 @@ static void print_spaces(int count) * If indent is negative, assume that already -indent columns have been * consumed (and no extra indent is necessary for the first line). */ -int print_wrapped_text(const char *text, int indent, int indent2, int width) +int strbuf_add_wrapped_text(struct strbuf *buf, + const char *text, int indent, int indent2, int width) { int w = indent, assume_utf8 = is_utf8(text); const char *bol = text, *space = NULL; + if (width <= 0) { + strbuf_add_indented_text(buf, text, indent, indent2); + return 1; + } + if (indent < 0) { w = -indent; space = text; } for (;;) { - char c = *text; + char c; + size_t skip; + + while ((skip = display_mode_esc_sequence_len(text))) + text += skip; + + c = *text; if (!c || isspace(c)) { if (w < width || !space) { const char *start = bol; + if (!c && text == start) + return w; if (space) start = space; else - print_spaces(indent); - fwrite(start, text - start, 1, stdout); + print_spaces(buf, indent); + strbuf_write(buf, start, text - start); if (!c) return w; - else if (c == '\t') - w |= 0x07; space = text; + if (c == '\t') + w |= 0x07; + else if (c == '\n') { + space++; + if (*space == '\n') { + strbuf_write(buf, "\n", 1); + goto new_line; + } + else if (!isalnum(*space)) + goto new_line; + else + strbuf_write(buf, " ", 1); + } w++; text++; } else { - putchar('\n'); +new_line: + strbuf_write(buf, "\n", 1); text = bol = space + isspace(*space); space = NULL; w = indent = indent2; @@ -340,6 +405,11 @@ int print_wrapped_text(const char *text, int indent, int indent2, int width) } } +int print_wrapped_text(const char *text, int indent, int indent2, int width) +{ + return strbuf_add_wrapped_text(NULL, text, indent, indent2, width); +} + int is_encoding_utf8(const char *name) { if (!name) @@ -354,7 +424,7 @@ int is_encoding_utf8(const char *name) * with iconv. If the conversion fails, returns NULL. */ #ifndef NO_ICONV -#ifdef OLD_ICONV +#if defined(OLD_ICONV) || (defined(__sun__) && !defined(_XPG6)) typedef const char * iconv_ibp; #else typedef char * iconv_ibp; |