diff options
| -rw-r--r-- | builtin-apply.c | 123 | ||||
| -rw-r--r-- | builtin-checkout-index.c | 27 | ||||
| -rw-r--r-- | builtin-update-index.c | 51 | ||||
| -rw-r--r-- | fast-import.c | 47 | ||||
| -rw-r--r-- | mktree.c | 25 | ||||
| -rw-r--r-- | quote.c | 104 | ||||
| -rw-r--r-- | quote.h | 2 |
7 files changed, 191 insertions, 188 deletions
diff --git a/builtin-apply.c b/builtin-apply.c index db337f1..1cf68ed 100644 --- a/builtin-apply.c +++ b/builtin-apply.c @@ -231,35 +231,33 @@ static char *find_name(const char *line, char *def, int p_value, int terminate) { int len; const char *start = line; - char *name; if (*line == '"') { + struct strbuf name; + /* Proposed "new-style" GNU patch/diff format; see * http://marc.theaimsgroup.com/?l=git&m=112927316408690&w=2 */ - name = unquote_c_style(line, NULL); - if (name) { - char *cp = name; - while (p_value) { + strbuf_init(&name, 0); + if (!unquote_c_style(&name, line, NULL)) { + char *cp; + + for (cp = name.buf; p_value; p_value--) { cp = strchr(cp, '/'); if (!cp) break; cp++; - p_value--; } if (cp) { /* name can later be freed, so we need * to memmove, not just return cp */ - memmove(name, cp, strlen(cp) + 1); + strbuf_remove(&name, 0, cp - name.buf); free(def); - return name; - } - else { - free(name); - name = NULL; + return name.buf; } } + strbuf_release(&name); } for (;;) { @@ -567,29 +565,30 @@ static const char *stop_at_slash(const char *line, int llen) */ static char *git_header_name(char *line, int llen) { - int len; const char *name; const char *second = NULL; + size_t len; line += strlen("diff --git "); llen -= strlen("diff --git "); if (*line == '"') { const char *cp; - char *first = unquote_c_style(line, &second); - if (!first) - return NULL; + struct strbuf first; + struct strbuf sp; + + strbuf_init(&first, 0); + strbuf_init(&sp, 0); + + if (unquote_c_style(&first, line, &second)) + goto free_and_fail1; /* advance to the first slash */ - cp = stop_at_slash(first, strlen(first)); - if (!cp || cp == first) { - /* we do not accept absolute paths */ - free_first_and_fail: - free(first); - return NULL; - } - len = strlen(cp+1); - memmove(first, cp+1, len+1); /* including NUL */ + cp = stop_at_slash(first.buf, first.len); + /* we do not accept absolute paths */ + if (!cp || cp == first.buf) + goto free_and_fail1; + strbuf_remove(&first, 0, cp + 1 - first.buf); /* second points at one past closing dq of name. * find the second name. @@ -598,40 +597,40 @@ static char *git_header_name(char *line, int llen) second++; if (line + llen <= second) - goto free_first_and_fail; + goto free_and_fail1; if (*second == '"') { - char *sp = unquote_c_style(second, NULL); - if (!sp) - goto free_first_and_fail; - cp = stop_at_slash(sp, strlen(sp)); - if (!cp || cp == sp) { - free_both_and_fail: - free(sp); - goto free_first_and_fail; - } + if (unquote_c_style(&sp, second, NULL)) + goto free_and_fail1; + cp = stop_at_slash(sp.buf, sp.len); + if (!cp || cp == sp.buf) + goto free_and_fail1; /* They must match, otherwise ignore */ - if (strcmp(cp+1, first)) - goto free_both_and_fail; - free(sp); - return first; + if (strcmp(cp + 1, first.buf)) + goto free_and_fail1; + strbuf_release(&sp); + return first.buf; } /* unquoted second */ cp = stop_at_slash(second, line + llen - second); if (!cp || cp == second) - goto free_first_and_fail; + goto free_and_fail1; cp++; - if (line + llen - cp != len + 1 || - memcmp(first, cp, len)) - goto free_first_and_fail; - return first; + if (line + llen - cp != first.len + 1 || + memcmp(first.buf, cp, first.len)) + goto free_and_fail1; + return first.buf; + + free_and_fail1: + strbuf_release(&first); + strbuf_release(&sp); + return NULL; } /* unquoted first name */ name = stop_at_slash(line, llen); if (!name || name == line) return NULL; - name++; /* since the first name is unquoted, a dq if exists must be @@ -639,28 +638,30 @@ static char *git_header_name(char *line, int llen) */ for (second = name; second < line + llen; second++) { if (*second == '"') { - const char *cp = second; + struct strbuf sp; const char *np; - char *sp = unquote_c_style(second, NULL); - - if (!sp) - return NULL; - np = stop_at_slash(sp, strlen(sp)); - if (!np || np == sp) { - free_second_and_fail: - free(sp); - return NULL; - } + + strbuf_init(&sp, 0); + if (unquote_c_style(&sp, second, NULL)) + goto free_and_fail2; + + np = stop_at_slash(sp.buf, sp.len); + if (!np || np == sp.buf) + goto free_and_fail2; np++; - len = strlen(np); - if (len < cp - name && + + len = sp.buf + sp.len - np; + if (len < second - name && !strncmp(np, name, len) && isspace(name[len])) { /* Good */ - memmove(sp, np, len + 1); - return sp; + strbuf_remove(&sp, 0, np - sp.buf); + return sp.buf; } - goto free_second_and_fail; + + free_and_fail2: + strbuf_release(&sp); + return NULL; } } diff --git a/builtin-checkout-index.c b/builtin-checkout-index.c index a18ecc4..e6264c4 100644 --- a/builtin-checkout-index.c +++ b/builtin-checkout-index.c @@ -270,26 +270,27 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix) } if (read_from_stdin) { - struct strbuf buf; + struct strbuf buf, nbuf; + if (all) die("git-checkout-index: don't mix '--all' and '--stdin'"); + strbuf_init(&buf, 0); - while (1) { - char *path_name; + strbuf_init(&nbuf, 0); + while (strbuf_getline(&buf, stdin, line_termination) != EOF) { const char *p; - if (strbuf_getline(&buf, stdin, line_termination) == EOF) - break; - if (line_termination && buf.buf[0] == '"') - path_name = unquote_c_style(buf.buf, NULL); - else - path_name = buf.buf; - p = prefix_path(prefix, prefix_length, path_name); + if (line_termination && buf.buf[0] == '"') { + strbuf_reset(&nbuf); + if (unquote_c_style(&nbuf, buf.buf, NULL)) + die("line is badly quoted"); + strbuf_swap(&buf, &nbuf); + } + p = prefix_path(prefix, prefix_length, buf.buf); checkout_file(p, prefix_length); - if (p < path_name || p > path_name + strlen(path_name)) + if (p < buf.buf || p > buf.buf + buf.len) free((char *)p); - if (path_name != buf.buf) - free(path_name); } + strbuf_release(&nbuf); strbuf_release(&buf); } diff --git a/builtin-update-index.c b/builtin-update-index.c index acd5ab5..c76879e 100644 --- a/builtin-update-index.c +++ b/builtin-update-index.c @@ -295,8 +295,11 @@ static void update_one(const char *path, const char *prefix, int prefix_length) static void read_index_info(int line_termination) { struct strbuf buf; + struct strbuf uq; + strbuf_init(&buf, 0); - while (1) { + strbuf_init(&uq, 0); + while (strbuf_getline(&buf, stdin, line_termination) != EOF) { char *ptr, *tab; char *path_name; unsigned char sha1[20]; @@ -320,9 +323,6 @@ static void read_index_info(int line_termination) * This format is to put higher order stages into the * index file and matches git-ls-files --stage output. */ - if (strbuf_getline(&buf, stdin, line_termination) == EOF) - break; - errno = 0; ul = strtoul(buf.buf, &ptr, 8); if (ptr == buf.buf || *ptr != ' ' @@ -347,15 +347,17 @@ static void read_index_info(int line_termination) if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ') goto bad_line; - if (line_termination && ptr[0] == '"') - path_name = unquote_c_style(ptr, NULL); - else - path_name = ptr; + path_name = ptr; + if (line_termination && path_name[0] == '"') { + strbuf_reset(&uq); + if (unquote_c_style(&uq, path_name, NULL)) { + die("git-update-index: bad quoting of path name"); + } + path_name = uq.buf; + } if (!verify_path(path_name)) { fprintf(stderr, "Ignoring path %s\n", path_name); - if (path_name != ptr) - free(path_name); continue; } @@ -383,6 +385,7 @@ static void read_index_info(int line_termination) die("malformed index info %s", buf.buf); } strbuf_release(&buf); + strbuf_release(&uq); } static const char update_index_usage[] = @@ -705,26 +708,26 @@ int cmd_update_index(int argc, const char **argv, const char *prefix) free((char*)p); } if (read_from_stdin) { - struct strbuf buf; + struct strbuf buf, nbuf; + strbuf_init(&buf, 0); - while (1) { - char *path_name; + strbuf_init(&nbuf, 0); + while (strbuf_getline(&buf, stdin, line_termination) != EOF) { const char *p; - if (strbuf_getline(&buf, stdin, line_termination) == EOF) - break; - if (line_termination && buf.buf[0] == '"') - path_name = unquote_c_style(buf.buf, NULL); - else - path_name = buf.buf; - p = prefix_path(prefix, prefix_length, path_name); + if (line_termination && buf.buf[0] == '"') { + strbuf_reset(&nbuf); + if (unquote_c_style(&nbuf, buf.buf, NULL)) + die("line is badly quoted"); + strbuf_swap(&buf, &nbuf); + } + p = prefix_path(prefix, prefix_length, buf.buf); update_one(p, NULL, 0); if (set_executable_bit) chmod_path(set_executable_bit, p); - if (p < path_name || p > path_name + strlen(path_name)) - free((char*) p); - if (path_name != buf.buf) - free(path_name); + if (p < buf.buf || p > buf.buf + buf.len) + free((char *)p); } + strbuf_release(&nbuf); strbuf_release(&buf); } diff --git a/fast-import.c b/fast-import.c index eddae22..a870a44 100644 --- a/fast-import.c +++ b/fast-import.c @@ -1759,7 +1759,7 @@ static void load_branch(struct branch *b) static void file_change_m(struct branch *b) { const char *p = command_buf.buf + 2; - char *p_uq; + static struct strbuf uq = STRBUF_INIT; const char *endp; struct object_entry *oe = oe; unsigned char sha1[20]; @@ -1797,18 +1797,20 @@ static void file_change_m(struct branch *b) if (*p++ != ' ') die("Missing space after SHA1: %s", command_buf.buf); - p_uq = unquote_c_style(p, &endp); - if (p_uq) { + strbuf_reset(&uq); + if (!unquote_c_style(&uq, p, &endp)) { if (*endp) die("Garbage after path in: %s", command_buf.buf); - p = p_uq; + p = uq.buf; } if (inline_data) { static struct strbuf buf = STRBUF_INIT; - if (!p_uq) - p = p_uq = xstrdup(p); + if (p != uq.buf) { + strbuf_addstr(&uq, p); + p = uq.buf; + } read_next_command(); cmd_data(&buf); store_object(OBJ_BLOB, &buf, &last_blob, sha1, 0); @@ -1826,56 +1828,54 @@ static void file_change_m(struct branch *b) } tree_content_set(&b->branch_tree, p, sha1, S_IFREG | mode, NULL); - free(p_uq); } static void file_change_d(struct branch *b) { const char *p = command_buf.buf + 2; - char *p_uq; + static struct strbuf uq = STRBUF_INIT; const char *endp; - p_uq = unquote_c_style(p, &endp); - if (p_uq) { + strbuf_reset(&uq); + if (!unquote_c_style(&uq, p, &endp)) { if (*endp) die("Garbage after path in: %s", command_buf.buf); - p = p_uq; + p = uq.buf; } tree_content_remove(&b->branch_tree, p, NULL); - free(p_uq); } static void file_change_cr(struct branch *b, int rename) { const char *s, *d; - char *s_uq, *d_uq; + static struct strbuf s_uq = STRBUF_INIT; + static struct strbuf d_uq = STRBUF_INIT; const char *endp; struct tree_entry leaf; s = command_buf.buf + 2; - s_uq = unquote_c_style(s, &endp); - if (s_uq) { + strbuf_reset(&s_uq); + if (!unquote_c_style(&s_uq, s, &endp)) { if (*endp != ' ') die("Missing space after source: %s", command_buf.buf); - } - else { + } else { endp = strchr(s, ' '); if (!endp) die("Missing space after source: %s", command_buf.buf); - s_uq = xmemdupz(s, endp - s); + strbuf_add(&s_uq, s, endp - s); } - s = s_uq; + s = s_uq.buf; endp++; if (!*endp) die("Missing dest: %s", command_buf.buf); d = endp; - d_uq = unquote_c_style(d, &endp); - if (d_uq) { + strbuf_reset(&d_uq); + if (!unquote_c_style(&d_uq, d, &endp)) { if (*endp) die("Garbage after dest in: %s", command_buf.buf); - d = d_uq; + d = d_uq.buf; } memset(&leaf, 0, sizeof(leaf)); @@ -1889,9 +1889,6 @@ static void file_change_cr(struct branch *b, int rename) leaf.versions[1].sha1, leaf.versions[1].mode, leaf.tree); - - free(s_uq); - free(d_uq); } static void file_change_deleteall(struct branch *b) @@ -66,6 +66,7 @@ static const char mktree_usage[] = "git-mktree [-z]"; int main(int ac, char **av) { struct strbuf sb; + struct strbuf p_uq; unsigned char sha1[20]; int line_termination = '\n'; @@ -82,14 +83,13 @@ int main(int ac, char **av) } strbuf_init(&sb, 0); - while (1) { + strbuf_init(&p_uq, 0); + while (strbuf_getline(&sb, stdin, line_termination) != EOF) { char *ptr, *ntr; unsigned mode; enum object_type type; char *path; - if (strbuf_getline(&sb, stdin, line_termination) == EOF) - break; ptr = sb.buf; /* Input is non-recursive ls-tree output format * mode SP type SP sha1 TAB name @@ -109,18 +109,21 @@ int main(int ac, char **av) *ntr++ = 0; /* now at the beginning of SHA1 */ if (type != type_from_string(ptr)) die("object type %s mismatch (%s)", ptr, typename(type)); - ntr += 41; /* at the beginning of name */ - if (line_termination && ntr[0] == '"') - path = unquote_c_style(ntr, NULL); - else - path = ntr; - append_to_tree(mode, sha1, path); + path = ntr + 41; /* at the beginning of name */ + if (line_termination && path[0] == '"') { + strbuf_reset(&p_uq); + if (unquote_c_style(&p_uq, path, NULL)) { + die("invalid quoting"); + } + path = p_uq.buf; + } - if (path != ntr) - free(path); + append_to_tree(mode, sha1, path); } + strbuf_release(&p_uq); strbuf_release(&sb); + write_tree(sha1); puts(sha1_to_hex(sha1)); exit(0); @@ -239,73 +239,71 @@ int quote_c_style(const char *name, char *outbuf, FILE *outfp, int no_dq) /* * C-style name unquoting. * - * Quoted should point at the opening double quote. Returns - * an allocated memory that holds unquoted name, which the caller - * should free when done. Updates endp pointer to point at - * one past the ending double quote if given. + * Quoted should point at the opening double quote. + * + Returns 0 if it was able to unquote the string properly, and appends the + * result in the strbuf `sb'. + * + Returns -1 in case of error, and doesn't touch the strbuf. Though note + * that this function will allocate memory in the strbuf, so calling + * strbuf_release is mandatory whichever result unquote_c_style returns. + * + * Updates endp pointer to point at one past the ending double quote if given. */ - -char *unquote_c_style(const char *quoted, const char **endp) +int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp) { - const char *sp; - char *name = NULL, *outp = NULL; - int count = 0, ch, ac; - -#undef EMIT -#define EMIT(c) (outp ? (*outp++ = (c)) : (count++)) + size_t oldlen = sb->len, len; + int ch, ac; if (*quoted++ != '"') - return NULL; + return -1; + + for (;;) { + len = strcspn(quoted, "\"\\"); + strbuf_add(sb, quoted, len); + quoted += len; - while (1) { - /* first pass counts and allocates, second pass fills */ - for (sp = quoted; (ch = *sp++) != '"'; ) { - if (ch == '\\') { - switch (ch = *sp++) { - case 'a': ch = '\a'; break; - case 'b': ch = '\b'; break; - case 'f': ch = '\f'; break; - case 'n': ch = '\n'; break; - case 'r': ch = '\r'; break; - case 't': ch = '\t'; break; - case 'v': ch = '\v'; break; - - case '\\': case '"': - break; /* verbatim */ - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - /* octal */ + switch (*quoted++) { + case '"': + if (endp) + *endp = quoted + 1; + return 0; + case '\\': + break; + default: + goto error; + } + + switch ((ch = *quoted++)) { + case 'a': ch = '\a'; break; + case 'b': ch = '\b'; break; + case 'f': ch = '\f'; break; + case 'n': ch = '\n'; break; + case 'r': ch = '\r'; break; + case 't': ch = '\t'; break; + case 'v': ch = '\v'; break; + + case '\\': case '"': + break; /* verbatim */ + + /* octal values with first digit over 4 overflow */ + case '0': case '1': case '2': case '3': ac = ((ch - '0') << 6); - if ((ch = *sp++) < '0' || '7' < ch) - return NULL; + if ((ch = *quoted++) < '0' || '7' < ch) + goto error; ac |= ((ch - '0') << 3); - if ((ch = *sp++) < '0' || '7' < ch) - return NULL; + if ((ch = *quoted++) < '0' || '7' < ch) + goto error; ac |= (ch - '0'); ch = ac; break; default: - return NULL; /* malformed */ - } + goto error; } - EMIT(ch); + strbuf_addch(sb, ch); } - if (name) { - *outp = 0; - if (endp) - *endp = sp; - return name; - } - outp = name = xmalloc(count + 1); - } + error: + strbuf_setlen(sb, oldlen); + return -1; } void write_name_quoted(const char *prefix, int prefix_len, @@ -43,9 +43,9 @@ extern int add_to_string(char **ptrp, int *sizep, const char *str, int quote); */ extern char *sq_dequote(char *); +extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp); extern int quote_c_style(const char *name, char *outbuf, FILE *outfp, int nodq); -extern char *unquote_c_style(const char *quoted, const char **endp); extern void write_name_quoted(const char *prefix, int prefix_len, const char *name, int quote, FILE *out); |