diff options
| -rw-r--r-- | apply.c | 228 | ||||
| -rwxr-xr-x | git-am.sh | 4 |
2 files changed, 186 insertions, 46 deletions
@@ -8,12 +8,13 @@ */ #include <fnmatch.h> #include "cache.h" +#include "quote.h" // --check turns on checking that the working tree matches the // files that are being modified, but doesn't apply the patch // --stat does just a diffstat, and doesn't actually apply // --show-files shows the directory changes -// --show-index-info shows the old and new index info for paths if available. +// --index-info shows the old and new index info for paths if available. // static int check_index = 0; static int write_index = 0; @@ -23,8 +24,9 @@ static int check = 0; static int apply = 1; static int show_files = 0; static int show_index_info = 0; +static int line_termination = '\n'; static const char apply_usage[] = -"git-apply [--stat] [--summary] [--check] [--index] [--apply] [--show-files] [--show-index-info] <patch>..."; +"git-apply [--stat] [--summary] [--check] [--index] [--apply] [--show-files] [--index-info] [-z] <patch>..."; /* * For "diff-stat" like behaviour, we keep track of the biggest change @@ -135,6 +137,35 @@ static char * find_name(const char *line, char *def, int p_value, int terminate) const char *start = line; char *name; + if (*line == '"') { + /* 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) { + cp = strchr(name, '/'); + 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); + free(def); + return name; + } + else { + free(name); + name = NULL; + } + } + } + for (;;) { char c = *line; @@ -224,37 +255,29 @@ static int gitdiff_hdrend(const char *line, struct patch *patch) */ static char *gitdiff_verify_name(const char *line, int isnull, char *orig_name, const char *oldnew) { - int len; - const char *name; - if (!orig_name && !isnull) return find_name(line, NULL, 1, 0); - name = "/dev/null"; - len = 9; if (orig_name) { + int len; + const char *name; + char *another; name = orig_name; len = strlen(name); if (isnull) die("git-apply: bad git-diff - expected /dev/null, got %s on line %d", name, linenr); - } - - if (*name == '/') - goto absolute_path; - - for (;;) { - char c = *line++; - if (c == '\n') - break; - if (c != '/') - continue; -absolute_path: - if (memcmp(line, name, len) || line[len] != '\n') - break; + another = find_name(line, NULL, 1, 0); + if (!another || memcmp(another, name, len)) + die("git-apply: bad git-diff - inconsistent %s filename on line %d", oldnew, linenr); + free(another); return orig_name; } - die("git-apply: bad git-diff - inconsistent %s filename on line %d", oldnew, linenr); - return NULL; + else { + /* expect "/dev/null" */ + if (memcmp("/dev/null", line, 9) || line[9] != '\n') + die("git-apply: bad git-diff - expected /dev/null on line %d", linenr); + return NULL; + } } static int gitdiff_oldname(const char *line, struct patch *patch) @@ -378,29 +401,124 @@ static int gitdiff_unrecognized(const char *line, struct patch *patch) return -1; } -static char *git_header_name(char *line) +static const char *stop_at_slash(const char *line, int llen) +{ + int i; + + for (i = 0; i < llen; i++) { + int ch = line[i]; + if (ch == '/') + return line + i; + } + return NULL; +} + +/* This is to extract the same name that appears on "diff --git" + * line. We do not find and return anything if it is a rename + * patch, and it is OK because we will find the name elsewhere. + * We need to reliably find name only when it is mode-change only, + * creation or deletion of an empty file. In any of these cases, + * both sides are the same name under a/ and b/ respectively. + */ +static char *git_header_name(char *line, int llen) { int len; - char *name, *second; + const char *name; + const char *second = NULL; - /* - * Find the first '/' - */ - name = line; - for (;;) { - char c = *name++; - if (c == '\n') + line += strlen("diff --git "); + llen -= strlen("diff --git "); + + if (*line == '"') { + const char *cp; + char *first = unquote_c_style(line, &second); + if (!first) return NULL; - if (c == '/') - break; + + /* 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 */ + + /* second points at one past closing dq of name. + * find the second name. + */ + while ((second < line + llen) && isspace(*second)) + second++; + + if (line + llen <= second) + goto free_first_and_fail; + 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; + } + /* They must match, otherwise ignore */ + if (strcmp(cp+1, first)) + goto free_both_and_fail; + free(sp); + return first; + } + + /* unquoted second */ + cp = stop_at_slash(second, line + llen - second); + if (!cp || cp == second) + goto free_first_and_fail; + cp++; + if (line + llen - cp != len + 1 || + memcmp(first, cp, len)) + goto free_first_and_fail; + return first; } - /* - * We don't accept absolute paths (/dev/null) as possibly valid - */ - if (name == line+1) + /* 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 + * the beginning of the second name. + */ + for (second = name; second < line + llen; second++) { + if (*second == '"') { + const char *cp = second; + 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; + } + np++; + len = strlen(np); + if (len < cp - name && + !strncmp(np, name, len) && + isspace(name[len])) { + /* Good */ + memmove(sp, np, len + 1); + return sp; + } + goto free_second_and_fail; + } + } + /* * Accept a name only if it shows up twice, exactly the same * form. @@ -448,7 +566,7 @@ static int parse_git_header(char *line, int len, unsigned int size, struct patch * or removing or adding empty files), so we get * the default name from the header. */ - patch->def_name = git_header_name(line + strlen("diff --git ")); + patch->def_name = git_header_name(line, len); line += len; size -= len; @@ -785,11 +903,18 @@ static void show_stats(struct patch *patch) { const char *prefix = ""; char *name = patch->new_name; + char *qname = NULL; int len, max, add, del, total; if (!name) name = patch->old_name; + if (0 < (len = quote_c_style(name, NULL, NULL, 0))) { + qname = xmalloc(len + 1); + quote_c_style(name, qname, NULL, 0); + name = qname; + } + /* * "scale" the filename */ @@ -827,6 +952,8 @@ static void show_stats(struct patch *patch) printf(" %s%-*s |%5d %.*s%.*s\n", prefix, len, name, patch->lines_added + patch->lines_deleted, add, pluses, del, minuses); + if (qname) + free(qname); } static int read_old_data(struct stat *st, const char *path, void *buf, unsigned long size) @@ -1197,8 +1324,13 @@ static void show_index_list(struct patch *list) name); else sha1_ptr = sha1; - printf("%06o %s %s\n",patch->old_mode, - sha1_to_hex(sha1_ptr), name); + + printf("%06o %s ",patch->old_mode, sha1_to_hex(sha1_ptr)); + if (line_termination && quote_c_style(name, NULL, NULL, 0)) + quote_c_style(name, NULL, stdout, 0); + else + fputs(name, stdout); + putchar(line_termination); } } @@ -1301,12 +1433,16 @@ static void patch_stats(struct patch *patch) if (lines > max_change) max_change = lines; if (patch->old_name) { - int len = strlen(patch->old_name); + int len = quote_c_style(patch->old_name, NULL, NULL, 0); + if (!len) + len = strlen(patch->old_name); if (len > max_len) max_len = len; } if (patch->new_name) { - int len = strlen(patch->new_name); + int len = quote_c_style(patch->new_name, NULL, NULL, 0); + if (!len) + len = strlen(patch->new_name); if (len > max_len) max_len = len; } @@ -1603,11 +1739,15 @@ int main(int argc, char **argv) show_files = 1; continue; } - if (!strcmp(arg, "--show-index-info")) { + if (!strcmp(arg, "--index-info")) { apply = 0; show_index_info = 1; continue; } + if (!strcmp(arg, "-z")) { + line_termination = 0; + continue; + } fd = open(arg, O_RDONLY); if (fd < 0) usage(apply_usage); @@ -35,10 +35,10 @@ fall_back_3way () { mkdir "$dotest/patch-merge-tmp-dir" # First see if the patch records the index info that we can use. - if git-apply --show-index-info "$dotest/patch" \ + if git-apply -z --index-info "$dotest/patch" \ >"$dotest/patch-merge-index-info" 2>/dev/null && GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \ - git-update-index --index-info <"$dotest/patch-merge-index-info" && + git-update-index -z --index-info <"$dotest/patch-merge-index-info" && GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \ git-write-tree >"$dotest/patch-merge-base+" && # index has the base tree now. |