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Diffstat (limited to 'combine-diff.c')
-rw-r--r--combine-diff.c230
1 files changed, 155 insertions, 75 deletions
diff --git a/combine-diff.c b/combine-diff.c
index 7557136c82..b11eb7102c 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -7,6 +7,7 @@
#include "xdiff-interface.h"
#include "log-tree.h"
#include "refs.h"
+#include "userdiff.h"
static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, int n, int num_parent)
{
@@ -92,7 +93,9 @@ struct sline {
unsigned long *p_lno;
};
-static char *grab_blob(const unsigned char *sha1, unsigned int mode, unsigned long *size)
+static char *grab_blob(const unsigned char *sha1, unsigned int mode,
+ unsigned long *size, struct userdiff_driver *textconv,
+ const char *path)
{
char *blob;
enum object_type type;
@@ -105,6 +108,11 @@ static char *grab_blob(const unsigned char *sha1, unsigned int mode, unsigned lo
/* deleted blob */
*size = 0;
return xcalloc(1, 1);
+ } else if (textconv) {
+ struct diff_filespec *df = alloc_filespec(path);
+ fill_filespec(df, sha1, mode);
+ *size = fill_textconv(textconv, df, &blob);
+ free_filespec(df);
} else {
blob = read_sha1_file(sha1, &type, size);
if (type != OBJ_BLOB)
@@ -204,7 +212,9 @@ static void consume_line(void *state_, char *line, unsigned long len)
static void combine_diff(const unsigned char *parent, unsigned int mode,
mmfile_t *result_file,
struct sline *sline, unsigned int cnt, int n,
- int num_parent, int result_deleted)
+ int num_parent, int result_deleted,
+ struct userdiff_driver *textconv,
+ const char *path)
{
unsigned int p_lno, lno;
unsigned long nmask = (1UL << n);
@@ -217,10 +227,10 @@ static void combine_diff(const unsigned char *parent, unsigned int mode,
if (result_deleted)
return; /* result deleted */
- parent_file.ptr = grab_blob(parent, mode, &sz);
+ parent_file.ptr = grab_blob(parent, mode, &sz, textconv, path);
parent_file.size = sz;
memset(&xpp, 0, sizeof(xpp));
- xpp.flags = XDF_NEED_MINIMAL;
+ xpp.flags = 0;
memset(&xecfg, 0, sizeof(xecfg));
memset(&state, 0, sizeof(state));
state.nmask = nmask;
@@ -681,8 +691,85 @@ static void dump_quoted_path(const char *head,
puts(buf.buf);
}
+static void show_combined_header(struct combine_diff_path *elem,
+ int num_parent,
+ int dense,
+ struct rev_info *rev,
+ int mode_differs,
+ int show_file_header)
+{
+ struct diff_options *opt = &rev->diffopt;
+ int abbrev = DIFF_OPT_TST(opt, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
+ const char *a_prefix = opt->a_prefix ? opt->a_prefix : "a/";
+ const char *b_prefix = opt->b_prefix ? opt->b_prefix : "b/";
+ int use_color = DIFF_OPT_TST(opt, COLOR_DIFF);
+ const char *c_meta = diff_get_color(use_color, DIFF_METAINFO);
+ const char *c_reset = diff_get_color(use_color, DIFF_RESET);
+ const char *abb;
+ int added = 0;
+ int deleted = 0;
+ int i;
+
+ if (rev->loginfo && !rev->no_commit_id)
+ show_log(rev);
+
+ dump_quoted_path(dense ? "diff --cc " : "diff --combined ",
+ "", elem->path, c_meta, c_reset);
+ printf("%sindex ", c_meta);
+ for (i = 0; i < num_parent; i++) {
+ abb = find_unique_abbrev(elem->parent[i].sha1,
+ abbrev);
+ printf("%s%s", i ? "," : "", abb);
+ }
+ abb = find_unique_abbrev(elem->sha1, abbrev);
+ printf("..%s%s\n", abb, c_reset);
+
+ if (mode_differs) {
+ deleted = !elem->mode;
+
+ /* We say it was added if nobody had it */
+ added = !deleted;
+ for (i = 0; added && i < num_parent; i++)
+ if (elem->parent[i].status !=
+ DIFF_STATUS_ADDED)
+ added = 0;
+ if (added)
+ printf("%snew file mode %06o",
+ c_meta, elem->mode);
+ else {
+ if (deleted)
+ printf("%sdeleted file ", c_meta);
+ printf("mode ");
+ for (i = 0; i < num_parent; i++) {
+ printf("%s%06o", i ? "," : "",
+ elem->parent[i].mode);
+ }
+ if (elem->mode)
+ printf("..%06o", elem->mode);
+ }
+ printf("%s\n", c_reset);
+ }
+
+ if (!show_file_header)
+ return;
+
+ if (added)
+ dump_quoted_path("--- ", "", "/dev/null",
+ c_meta, c_reset);
+ else
+ dump_quoted_path("--- ", a_prefix, elem->path,
+ c_meta, c_reset);
+ if (deleted)
+ dump_quoted_path("+++ ", "", "/dev/null",
+ c_meta, c_reset);
+ else
+ dump_quoted_path("+++ ", b_prefix, elem->path,
+ c_meta, c_reset);
+}
+
static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
- int dense, struct rev_info *rev)
+ int dense, int working_tree_file,
+ struct rev_info *rev)
{
struct diff_options *opt = &rev->diffopt;
unsigned long result_size, cnt, lno;
@@ -691,18 +778,22 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
struct sline *sline; /* survived lines */
int mode_differs = 0;
int i, show_hunks;
- int working_tree_file = is_null_sha1(elem->sha1);
- int abbrev = DIFF_OPT_TST(opt, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
- const char *a_prefix, *b_prefix;
mmfile_t result_file;
+ struct userdiff_driver *userdiff;
+ struct userdiff_driver *textconv = NULL;
+ int is_binary;
context = opt->context;
- a_prefix = opt->a_prefix ? opt->a_prefix : "a/";
- b_prefix = opt->b_prefix ? opt->b_prefix : "b/";
+ userdiff = userdiff_find_by_path(elem->path);
+ if (!userdiff)
+ userdiff = userdiff_find_by_name("default");
+ if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV))
+ textconv = userdiff_get_textconv(userdiff);
/* Read the result of merge first */
if (!working_tree_file)
- result = grab_blob(elem->sha1, elem->mode, &result_size);
+ result = grab_blob(elem->sha1, elem->mode, &result_size,
+ textconv, elem->path);
else {
/* Used by diff-tree to read from the working tree */
struct stat st;
@@ -725,9 +816,16 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
} else if (S_ISDIR(st.st_mode)) {
unsigned char sha1[20];
if (resolve_gitlink_ref(elem->path, "HEAD", sha1) < 0)
- result = grab_blob(elem->sha1, elem->mode, &result_size);
+ result = grab_blob(elem->sha1, elem->mode,
+ &result_size, NULL, NULL);
else
- result = grab_blob(sha1, elem->mode, &result_size);
+ result = grab_blob(sha1, elem->mode,
+ &result_size, NULL, NULL);
+ } else if (textconv) {
+ struct diff_filespec *df = alloc_filespec(elem->path);
+ fill_filespec(df, null_sha1, st.st_mode);
+ result_size = fill_textconv(textconv, df, &result);
+ free_filespec(df);
} else if (0 <= (fd = open(elem->path, O_RDONLY))) {
size_t len = xsize_t(st.st_size);
ssize_t done;
@@ -777,6 +875,38 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
close(fd);
}
+ for (i = 0; i < num_parent; i++) {
+ if (elem->parent[i].mode != elem->mode) {
+ mode_differs = 1;
+ break;
+ }
+ }
+
+ if (textconv)
+ is_binary = 0;
+ else if (userdiff->binary != -1)
+ is_binary = userdiff->binary;
+ else {
+ is_binary = buffer_is_binary(result, result_size);
+ for (i = 0; !is_binary && i < num_parent; i++) {
+ char *buf;
+ unsigned long size;
+ buf = grab_blob(elem->parent[i].sha1,
+ elem->parent[i].mode,
+ &size, NULL, NULL);
+ if (buffer_is_binary(buf, size))
+ is_binary = 1;
+ free(buf);
+ }
+ }
+ if (is_binary) {
+ show_combined_header(elem, num_parent, dense, rev,
+ mode_differs, 0);
+ printf("Binary files differ\n");
+ free(result);
+ return;
+ }
+
for (cnt = 0, cp = result; cp < result + result_size; cp++) {
if (*cp == '\n')
cnt++;
@@ -824,71 +954,15 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
combine_diff(elem->parent[i].sha1,
elem->parent[i].mode,
&result_file, sline,
- cnt, i, num_parent, result_deleted);
- if (elem->parent[i].mode != elem->mode)
- mode_differs = 1;
+ cnt, i, num_parent, result_deleted,
+ textconv, elem->path);
}
show_hunks = make_hunks(sline, cnt, num_parent, dense);
if (show_hunks || mode_differs || working_tree_file) {
- const char *abb;
- int use_color = DIFF_OPT_TST(opt, COLOR_DIFF);
- const char *c_meta = diff_get_color(use_color, DIFF_METAINFO);
- const char *c_reset = diff_get_color(use_color, DIFF_RESET);
- int added = 0;
- int deleted = 0;
-
- if (rev->loginfo && !rev->no_commit_id)
- show_log(rev);
- dump_quoted_path(dense ? "diff --cc " : "diff --combined ",
- "", elem->path, c_meta, c_reset);
- printf("%sindex ", c_meta);
- for (i = 0; i < num_parent; i++) {
- abb = find_unique_abbrev(elem->parent[i].sha1,
- abbrev);
- printf("%s%s", i ? "," : "", abb);
- }
- abb = find_unique_abbrev(elem->sha1, abbrev);
- printf("..%s%s\n", abb, c_reset);
-
- if (mode_differs) {
- deleted = !elem->mode;
-
- /* We say it was added if nobody had it */
- added = !deleted;
- for (i = 0; added && i < num_parent; i++)
- if (elem->parent[i].status !=
- DIFF_STATUS_ADDED)
- added = 0;
- if (added)
- printf("%snew file mode %06o",
- c_meta, elem->mode);
- else {
- if (deleted)
- printf("%sdeleted file ", c_meta);
- printf("mode ");
- for (i = 0; i < num_parent; i++) {
- printf("%s%06o", i ? "," : "",
- elem->parent[i].mode);
- }
- if (elem->mode)
- printf("..%06o", elem->mode);
- }
- printf("%s\n", c_reset);
- }
- if (added)
- dump_quoted_path("--- ", "", "/dev/null",
- c_meta, c_reset);
- else
- dump_quoted_path("--- ", a_prefix, elem->path,
- c_meta, c_reset);
- if (deleted)
- dump_quoted_path("+++ ", "", "/dev/null",
- c_meta, c_reset);
- else
- dump_quoted_path("+++ ", b_prefix, elem->path,
- c_meta, c_reset);
+ show_combined_header(elem, num_parent, dense, rev,
+ mode_differs, 1);
dump_sline(sline, cnt, num_parent,
DIFF_OPT_TST(opt, COLOR_DIFF), result_deleted);
}
@@ -954,6 +1028,12 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re
write_name_quoted(p->path, stdout, line_termination);
}
+/*
+ * The result (p->elem) is from the working tree and their
+ * parents are typically from multiple stages during a merge
+ * (i.e. diff-files) or the state in HEAD and in the index
+ * (i.e. diff-index).
+ */
void show_combined_diff(struct combine_diff_path *p,
int num_parent,
int dense,
@@ -967,7 +1047,7 @@ void show_combined_diff(struct combine_diff_path *p,
DIFF_FORMAT_NAME_STATUS))
show_raw_diff(p, num_parent, rev);
else if (opt->output_format & DIFF_FORMAT_PATCH)
- show_patch_diff(p, num_parent, dense, rev);
+ show_patch_diff(p, num_parent, dense, 1, rev);
}
void diff_tree_combined(const unsigned char *sha1,
@@ -1035,7 +1115,7 @@ void diff_tree_combined(const unsigned char *sha1,
for (p = paths; p; p = p->next) {
if (p->len)
show_patch_diff(p, num_parent, dense,
- rev);
+ 0, rev);
}
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 20:19:10 +0000