diff options
Diffstat (limited to 'strbuf.c')
| -rw-r--r-- | strbuf.c | 98 |
1 files changed, 59 insertions, 39 deletions
@@ -10,6 +10,15 @@ int prefixcmp(const char *str, const char *prefix) return (unsigned char)*prefix - (unsigned char)*str; } +int suffixcmp(const char *str, const char *suffix) +{ + int len = strlen(str), suflen = strlen(suffix); + if (len < suflen) + return -1; + else + return strcmp(str + len - suflen, suffix); +} + /* * Used as the default ->buf value, so that people can always assume * buf is non NULL and ->buf is NUL terminated even for a freshly @@ -21,8 +30,10 @@ void strbuf_init(struct strbuf *sb, size_t hint) { sb->alloc = sb->len = 0; sb->buf = strbuf_slopbuf; - if (hint) + if (hint) { strbuf_grow(sb, hint); + sb->buf[0] = '\0'; + } } void strbuf_release(struct strbuf *sb) @@ -54,7 +65,8 @@ void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) void strbuf_grow(struct strbuf *sb, size_t extra) { - if (sb->len + extra + 1 <= sb->len) + if (unsigned_add_overflows(extra, 1) || + unsigned_add_overflows(sb->len, extra + 1)) die("you want to use way too much memory"); if (!sb->alloc) sb->buf = NULL; @@ -91,13 +103,6 @@ void strbuf_ltrim(struct strbuf *sb) sb->buf[sb->len] = '\0'; } -void strbuf_tolower(struct strbuf *sb) -{ - int i; - for (i = 0; i < sb->len; i++) - sb->buf[i] = tolower(sb->buf[i]); -} - struct strbuf **strbuf_split(const struct strbuf *sb, int delim) { int alloc = 2, pos = 0; @@ -150,7 +155,7 @@ int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, const void *data, size_t dlen) { - if (pos + len < pos) + if (unsigned_add_overflows(pos, len)) die("you want to use way too much memory"); if (pos > sb->len) die("`pos' is too far after the end of the buffer"); @@ -192,24 +197,29 @@ void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len) void strbuf_addf(struct strbuf *sb, const char *fmt, ...) { - int len; va_list ap; + va_start(ap, fmt); + strbuf_vaddf(sb, fmt, ap); + va_end(ap); +} + +void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) +{ + int len; + va_list cp; if (!strbuf_avail(sb)) strbuf_grow(sb, 64); - va_start(ap, fmt); - len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); - va_end(ap); + va_copy(cp, ap); + len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); + va_end(cp); if (len < 0) - die("your vsnprintf is broken"); + die("BUG: your vsnprintf is broken (returned %d)", len); if (len > strbuf_avail(sb)) { strbuf_grow(sb, len); - va_start(ap, fmt); len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); - va_end(ap); - if (len > strbuf_avail(sb)) { - die("this should not happen, your snprintf is broken"); - } + if (len > strbuf_avail(sb)) + die("BUG: your vsnprintf is broken (insatiable)"); } strbuf_setlen(sb, sb->len + len); } @@ -227,6 +237,12 @@ void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, break; format = percent + 1; + if (*format == '%') { + strbuf_addch(sb, '%'); + format++; + continue; + } + consumed = fn(sb, format, context); if (consumed) format += consumed; @@ -251,6 +267,17 @@ size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, return 0; } +void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) +{ + int i, len = src->len; + + for (i = 0; i < len; i++) { + if (src->buf[i] == '%') + strbuf_addch(dst, '%'); + strbuf_addch(dst, src->buf[i]); + } +} + size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) { size_t res; @@ -322,7 +349,7 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) return -1; } -int strbuf_getline(struct strbuf *sb, FILE *fp, int term) +int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) { int ch; @@ -332,10 +359,10 @@ int strbuf_getline(struct strbuf *sb, FILE *fp, int term) strbuf_reset(sb); while ((ch = fgetc(fp)) != EOF) { - if (ch == term) - break; strbuf_grow(sb, 1); sb->buf[sb->len++] = ch; + if (ch == term) + break; } if (ch == EOF && sb->len == 0) return EOF; @@ -344,6 +371,15 @@ int strbuf_getline(struct strbuf *sb, FILE *fp, int term) return 0; } +int strbuf_getline(struct strbuf *sb, FILE *fp, int term) +{ + if (strbuf_getwholeline(sb, fp, term)) + return EOF; + if (sb->buf[sb->len-1] == term) + strbuf_setlen(sb, sb->len-1); + return 0; +} + int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) { int fd, len; @@ -358,19 +394,3 @@ int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) return len; } - -int strbuf_branchname(struct strbuf *sb, const char *name) -{ - int len = strlen(name); - if (interpret_branch_name(name, sb) == len) - return 0; - strbuf_add(sb, name, len); - return len; -} - -int strbuf_check_branch_ref(struct strbuf *sb, const char *name) -{ - strbuf_branchname(sb, name); - strbuf_splice(sb, 0, 0, "refs/heads/", 11); - return check_ref_format(sb->buf); -} |