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-rw-r--r--diff-no-index.c110
1 files changed, 82 insertions, 28 deletions
diff --git a/diff-no-index.c b/diff-no-index.c
index 33e5982a1c..df762fd0f7 100644
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -15,8 +15,9 @@
#include "log-tree.h"
#include "builtin.h"
#include "string-list.h"
+#include "dir.h"
-static int read_directory(const char *path, struct string_list *list)
+static int read_directory_contents(const char *path, struct string_list *list)
{
DIR *dir;
struct dirent *e;
@@ -25,7 +26,7 @@ static int read_directory(const char *path, struct string_list *list)
return error("Could not open directory %s", path);
while ((e = readdir(dir)))
- if (strcmp(".", e->d_name) && strcmp("..", e->d_name))
+ if (!is_dot_or_dotdot(e->d_name))
string_list_insert(list, e->d_name);
closedir(dir);
@@ -64,8 +65,7 @@ static int populate_from_stdin(struct diff_filespec *s)
size_t size = 0;
if (strbuf_read(&buf, 0, 0) < 0)
- return error("error while reading from stdin %s",
- strerror(errno));
+ return error_errno("error while reading from stdin");
s->should_munmap = 0;
s->data = strbuf_detach(&buf, &size);
@@ -96,8 +96,27 @@ static int queue_diff(struct diff_options *o,
if (get_mode(name1, &mode1) || get_mode(name2, &mode2))
return -1;
- if (mode1 && mode2 && S_ISDIR(mode1) != S_ISDIR(mode2))
- return error("file/directory conflict: %s, %s", name1, name2);
+ if (mode1 && mode2 && S_ISDIR(mode1) != S_ISDIR(mode2)) {
+ struct diff_filespec *d1, *d2;
+
+ if (S_ISDIR(mode1)) {
+ /* 2 is file that is created */
+ d1 = noindex_filespec(NULL, 0);
+ d2 = noindex_filespec(name2, mode2);
+ name2 = NULL;
+ mode2 = 0;
+ } else {
+ /* 1 is file that is deleted */
+ d1 = noindex_filespec(name1, mode1);
+ d2 = noindex_filespec(NULL, 0);
+ name1 = NULL;
+ mode1 = 0;
+ }
+ /* emit that file */
+ diff_queue(&diff_queued_diff, d1, d2);
+
+ /* and then let the entire directory be created or deleted */
+ }
if (S_ISDIR(mode1) || S_ISDIR(mode2)) {
struct strbuf buffer1 = STRBUF_INIT;
@@ -107,24 +126,22 @@ static int queue_diff(struct diff_options *o,
int i1, i2, ret = 0;
size_t len1 = 0, len2 = 0;
- if (name1 && read_directory(name1, &p1))
+ if (name1 && read_directory_contents(name1, &p1))
return -1;
- if (name2 && read_directory(name2, &p2)) {
+ if (name2 && read_directory_contents(name2, &p2)) {
string_list_clear(&p1, 0);
return -1;
}
if (name1) {
strbuf_addstr(&buffer1, name1);
- if (buffer1.len && buffer1.buf[buffer1.len - 1] != '/')
- strbuf_addch(&buffer1, '/');
+ strbuf_complete(&buffer1, '/');
len1 = buffer1.len;
}
if (name2) {
strbuf_addstr(&buffer2, name2);
- if (buffer2.len && buffer2.buf[buffer2.len - 1] != '/')
- strbuf_addch(&buffer2, '/');
+ strbuf_complete(&buffer2, '/');
len2 = buffer2.len;
}
@@ -168,10 +185,8 @@ static int queue_diff(struct diff_options *o,
struct diff_filespec *d1, *d2;
if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
- unsigned tmp;
- const char *tmp_c;
- tmp = mode1; mode1 = mode2; mode2 = tmp;
- tmp_c = name1; name1 = name2; name2 = tmp_c;
+ SWAP(mode1, mode2);
+ SWAP(name1, name2);
}
d1 = noindex_filespec(name1, mode1);
@@ -181,28 +196,62 @@ static int queue_diff(struct diff_options *o,
}
}
+/* append basename of F to D */
+static void append_basename(struct strbuf *path, const char *dir, const char *file)
+{
+ const char *tail = strrchr(file, '/');
+
+ strbuf_addstr(path, dir);
+ while (path->len && path->buf[path->len - 1] == '/')
+ path->len--;
+ strbuf_addch(path, '/');
+ strbuf_addstr(path, tail ? tail + 1 : file);
+}
+
+/*
+ * DWIM "diff D F" into "diff D/F F" and "diff F D" into "diff F D/F"
+ * Note that we append the basename of F to D/, so "diff a/b/file D"
+ * becomes "diff a/b/file D/file", not "diff a/b/file D/a/b/file".
+ */
+static void fixup_paths(const char **path, struct strbuf *replacement)
+{
+ unsigned int isdir0, isdir1;
+
+ if (path[0] == file_from_standard_input ||
+ path[1] == file_from_standard_input)
+ return;
+ isdir0 = is_directory(path[0]);
+ isdir1 = is_directory(path[1]);
+ if (isdir0 == isdir1)
+ return;
+ if (isdir0) {
+ append_basename(replacement, path[0], path[1]);
+ path[0] = replacement->buf;
+ } else {
+ append_basename(replacement, path[1], path[0]);
+ path[1] = replacement->buf;
+ }
+}
+
void diff_no_index(struct rev_info *revs,
- int argc, const char **argv,
- const char *prefix)
+ int argc, const char **argv)
{
int i, prefixlen;
- unsigned deprecated_show_diff_q_option_used = 0;
const char *paths[2];
+ struct strbuf replacement = STRBUF_INIT;
+ const char *prefix = revs->prefix;
diff_setup(&revs->diffopt);
for (i = 1; i < argc - 2; ) {
int j;
if (!strcmp(argv[i], "--no-index"))
i++;
- else if (!strcmp(argv[i], "-q")) {
- deprecated_show_diff_q_option_used = 1;
- i++;
- }
else if (!strcmp(argv[i], "--"))
i++;
else {
- j = diff_opt_parse(&revs->diffopt, argv + i, argc - i);
- if (!j)
+ j = diff_opt_parse(&revs->diffopt, argv + i, argc - i,
+ revs->prefix);
+ if (j <= 0)
die("invalid diff option/value: %s", argv[i]);
i += j;
}
@@ -221,18 +270,21 @@ void diff_no_index(struct rev_info *revs,
p = xstrdup(prefix_filename(prefix, prefixlen, p));
paths[i] = p;
}
+
+ fixup_paths(paths, &replacement);
+
revs->diffopt.skip_stat_unmatch = 1;
if (!revs->diffopt.output_format)
revs->diffopt.output_format = DIFF_FORMAT_PATCH;
DIFF_OPT_SET(&revs->diffopt, NO_INDEX);
+ DIFF_OPT_SET(&revs->diffopt, RELATIVE_NAME);
+ revs->diffopt.prefix = prefix;
+
revs->max_count = -2;
diff_setup_done(&revs->diffopt);
- if (deprecated_show_diff_q_option_used)
- handle_deprecated_show_diff_q(&revs->diffopt);
-
setup_diff_pager(&revs->diffopt);
DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);
@@ -242,6 +294,8 @@ void diff_no_index(struct rev_info *revs,
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
+ strbuf_release(&replacement);
+
/*
* The return code for --no-index imitates diff(1):
* 0 = no changes, 1 = changes, else error
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 09:24:43 +0000