diff options
Diffstat (limited to 'strbuf.c')
| -rw-r--r-- | strbuf.c | 88 |
1 files changed, 77 insertions, 11 deletions
@@ -1,4 +1,5 @@ #include "cache.h" +#include "refs.h" int prefixcmp(const char *str, const char *prefix) { @@ -139,14 +140,11 @@ void strbuf_list_free(struct strbuf **sbs) int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) { - int cmp; - if (a->len < b->len) { - cmp = memcmp(a->buf, b->buf, a->len); - return cmp ? cmp : -1; - } else { - cmp = memcmp(a->buf, b->buf, b->len); - return cmp ? cmp : a->len != b->len; - } + int len = a->len < b->len ? a->len: b->len; + int cmp = memcmp(a->buf, b->buf, len); + if (cmp) + return cmp; + return a->len < b->len ? -1: a->len != b->len; } void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, @@ -237,21 +235,40 @@ void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, } } +size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, + void *context) +{ + struct strbuf_expand_dict_entry *e = context; + size_t len; + + for (; e->placeholder && (len = strlen(e->placeholder)); e++) { + if (!strncmp(placeholder, e->placeholder, len)) { + if (e->value) + strbuf_addstr(sb, e->value); + return len; + } + } + return 0; +} + size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) { size_t res; + size_t oldalloc = sb->alloc; strbuf_grow(sb, size); res = fread(sb->buf + sb->len, 1, size, f); - if (res > 0) { + if (res > 0) strbuf_setlen(sb, sb->len + res); - } + else if (oldalloc == 0) + strbuf_release(sb); return res; } ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) { size_t oldlen = sb->len; + size_t oldalloc = sb->alloc; strbuf_grow(sb, hint ? hint : 8192); for (;;) { @@ -259,7 +276,10 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); if (cnt < 0) { - strbuf_setlen(sb, oldlen); + if (oldalloc == 0) + strbuf_release(sb); + else + strbuf_setlen(sb, oldlen); return -1; } if (!cnt) @@ -272,6 +292,36 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) return sb->len - oldlen; } +#define STRBUF_MAXLINK (2*PATH_MAX) + +int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) +{ + size_t oldalloc = sb->alloc; + + if (hint < 32) + hint = 32; + + while (hint < STRBUF_MAXLINK) { + int len; + + strbuf_grow(sb, hint); + len = readlink(path, sb->buf, hint); + if (len < 0) { + if (errno != ERANGE) + break; + } else if (len < hint) { + strbuf_setlen(sb, len); + return 0; + } + + /* .. the buffer was too small - try again */ + hint *= 2; + } + if (oldalloc == 0) + strbuf_release(sb); + return -1; +} + int strbuf_getline(struct strbuf *sb, FILE *fp, int term) { int ch; @@ -308,3 +358,19 @@ 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); +} |