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authorJunio C Hamano <gitster@pobox.com>2008-07-01 16:22:39 -0700
committerJunio C Hamano <gitster@pobox.com>2008-07-01 16:22:39 -0700
commit27158e463a1be339ce34c7ee5fb553acaa7e28de (patch)
treea4ba9d0f81716dcb30e69677e09ef79c0878441d /builtin-apply.c
parentd4b76e15ea733002e364298a81889452b8bb2dfd (diff)
parentc14b9d1e330a7f68ffd0ad7e22d6148c6097c122 (diff)
downloadgit-27158e463a1be339ce34c7ee5fb553acaa7e28de.tar.gz
git-27158e463a1be339ce34c7ee5fb553acaa7e28de.tar.xz
Merge branch 'js/apply-recount'
* js/apply-recount: Allow git-apply to recount the lines in a hunk (AKA recountdiff)
Diffstat (limited to 'builtin-apply.c')
-rw-r--r--builtin-apply.c75
1 files changed, 68 insertions, 7 deletions
diff --git a/builtin-apply.c b/builtin-apply.c
index 985ca3be5..9fcfe3955 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -154,6 +154,7 @@ struct patch {
unsigned int is_binary:1;
unsigned int is_copy:1;
unsigned int is_rename:1;
+ unsigned int recount:1;
struct fragment *fragments;
char *result;
size_t resultsize;
@@ -890,6 +891,56 @@ static int parse_range(const char *line, int len, int offset, const char *expect
return offset + ex;
}
+static void recount_diff(char *line, int size, struct fragment *fragment)
+{
+ int oldlines = 0, newlines = 0, ret = 0;
+
+ if (size < 1) {
+ warning("recount: ignore empty hunk");
+ return;
+ }
+
+ for (;;) {
+ int len = linelen(line, size);
+ size -= len;
+ line += len;
+
+ if (size < 1)
+ break;
+
+ switch (*line) {
+ case ' ': case '\n':
+ newlines++;
+ /* fall through */
+ case '-':
+ oldlines++;
+ continue;
+ case '+':
+ newlines++;
+ continue;
+ case '\\':
+ break;
+ case '@':
+ ret = size < 3 || prefixcmp(line, "@@ ");
+ break;
+ case 'd':
+ ret = size < 5 || prefixcmp(line, "diff ");
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+ if (ret) {
+ warning("recount: unexpected line: %.*s",
+ (int)linelen(line, size), line);
+ return;
+ }
+ break;
+ }
+ fragment->oldlines = oldlines;
+ fragment->newlines = newlines;
+}
+
/*
* Parse a unified diff fragment header of the
* form "@@ -a,b +c,d @@"
@@ -1020,6 +1071,8 @@ static int parse_fragment(char *line, unsigned long size,
offset = parse_fragment_header(line, len, fragment);
if (offset < 0)
return -1;
+ if (offset > 0 && patch->recount)
+ recount_diff(line + offset, size - offset, fragment);
oldlines = fragment->oldlines;
newlines = fragment->newlines;
leading = 0;
@@ -2971,7 +3024,10 @@ static void prefix_patches(struct patch *p)
}
}
-static int apply_patch(int fd, const char *filename, int inaccurate_eof)
+#define INACCURATE_EOF (1<<0)
+#define RECOUNT (1<<1)
+
+static int apply_patch(int fd, const char *filename, int options)
{
size_t offset;
struct strbuf buf;
@@ -2989,7 +3045,8 @@ static int apply_patch(int fd, const char *filename, int inaccurate_eof)
int nr;
patch = xcalloc(1, sizeof(*patch));
- patch->inaccurate_eof = inaccurate_eof;
+ patch->inaccurate_eof = !!(options & INACCURATE_EOF);
+ patch->recount = !!(options & RECOUNT);
nr = parse_chunk(buf.buf + offset, buf.len - offset, patch);
if (nr < 0)
break;
@@ -3058,7 +3115,7 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
{
int i;
int read_stdin = 1;
- int inaccurate_eof = 0;
+ int options = 0;
int errs = 0;
int is_not_gitdir;
@@ -3076,7 +3133,7 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
int fd;
if (!strcmp(arg, "-")) {
- errs |= apply_patch(0, "<stdin>", inaccurate_eof);
+ errs |= apply_patch(0, "<stdin>", options);
read_stdin = 0;
continue;
}
@@ -3176,7 +3233,11 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
continue;
}
if (!strcmp(arg, "--inaccurate-eof")) {
- inaccurate_eof = 1;
+ options |= INACCURATE_EOF;
+ continue;
+ }
+ if (!strcmp(arg, "--recount")) {
+ options |= RECOUNT;
continue;
}
if (0 < prefix_length)
@@ -3187,12 +3248,12 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
die("can't open patch '%s': %s", arg, strerror(errno));
read_stdin = 0;
set_default_whitespace_mode(whitespace_option);
- errs |= apply_patch(fd, arg, inaccurate_eof);
+ errs |= apply_patch(fd, arg, options);
close(fd);
}
set_default_whitespace_mode(whitespace_option);
if (read_stdin)
- errs |= apply_patch(0, "<stdin>", inaccurate_eof);
+ errs |= apply_patch(0, "<stdin>", options);
if (whitespace_error) {
if (squelch_whitespace_errors &&
squelch_whitespace_errors < whitespace_error) {