#include "cache.h"
#include "commit.h"
+#include "blob.h"
#include "diff.h"
#include "diffcore.h"
#include "quote.h"
+#include "xdiff-interface.h"
static int uninteresting(struct diff_filepair *p)
{
if (diff_unmodified_pair(p))
return 1;
- if (!S_ISREG(p->one->mode) || !S_ISREG(p->two->mode))
- return 1;
return 0;
}
continue;
path = q->queue[i]->two->path;
len = strlen(path);
-
- p = xmalloc(sizeof(*p) + len + 1 + num_parent * 20);
- p->path = (char*) &(p->parent_sha1[num_parent][0]);
+ p = xmalloc(combine_diff_path_size(num_parent, len));
+ p->path = (char*) &(p->parent[num_parent]);
memcpy(p->path, path, len);
p->path[len] = 0;
p->len = len;
p->next = NULL;
+ memset(p->parent, 0,
+ sizeof(p->parent[0]) * num_parent);
+
memcpy(p->sha1, q->queue[i]->two->sha1, 20);
- memcpy(p->parent_sha1[n], q->queue[i]->one->sha1, 20);
+ p->mode = q->queue[i]->two->mode;
+ memcpy(p->parent[n].sha1, q->queue[i]->one->sha1, 20);
+ p->parent[n].mode = q->queue[i]->one->mode;
+ p->parent[n].status = q->queue[i]->status;
*tail = p;
tail = &p->next;
}
len = strlen(path);
if (len == p->len && !memcmp(path, p->path, len)) {
found = 1;
- memcpy(p->parent_sha1[n],
+ memcpy(p->parent[n].sha1,
q->queue[i]->one->sha1, 20);
+ p->parent[n].mode = q->queue[i]->one->mode;
+ p->parent[n].status = q->queue[i]->status;
break;
}
}
return xcalloc(1, 1);
}
blob = read_sha1_file(sha1, type, size);
- if (strcmp(type, "blob"))
+ if (strcmp(type, blob_type))
die("object '%s' is not a blob!", sha1_to_hex(sha1));
return blob;
}
-#define TMPPATHLEN 50
-#define MAXLINELEN 10240
-
-static void write_to_temp_file(char *tmpfile, void *blob, unsigned long size)
-{
- int fd = git_mkstemp(tmpfile, TMPPATHLEN, ".diff_XXXXXX");
- if (fd < 0)
- die("unable to create temp-file");
- if (write(fd, blob, size) != size)
- die("unable to write temp-file");
- close(fd);
-}
-
-static void write_temp_blob(char *tmpfile, const unsigned char *sha1)
-{
- unsigned long size;
- void *blob;
- blob = grab_blob(sha1, &size);
- write_to_temp_file(tmpfile, blob, size);
- free(blob);
-}
-
-static int parse_num(char **cp_p, unsigned int *num_p)
-{
- char *cp = *cp_p;
- unsigned int num = 0;
- int read_some;
-
- while ('0' <= *cp && *cp <= '9')
- num = num * 10 + *cp++ - '0';
- if (!(read_some = cp - *cp_p))
- return -1;
- *cp_p = cp;
- *num_p = num;
- return 0;
-}
-
-static int parse_hunk_header(char *line, int len,
- unsigned int *ob, unsigned int *on,
- unsigned int *nb, unsigned int *nn)
-{
- char *cp;
- cp = line + 4;
- if (parse_num(&cp, ob)) {
- bad_line:
- return error("malformed diff output: %s", line);
- }
- if (*cp == ',') {
- cp++;
- if (parse_num(&cp, on))
- goto bad_line;
- }
- else
- *on = 1;
- if (*cp++ != ' ' || *cp++ != '+')
- goto bad_line;
- if (parse_num(&cp, nb))
- goto bad_line;
- if (*cp == ',') {
- cp++;
- if (parse_num(&cp, nn))
- goto bad_line;
- }
- else
- *nn = 1;
- return -!!memcmp(cp, " @@", 3);
-}
-
-static void append_lost(struct sline *sline, int n, const char *line)
+static void append_lost(struct sline *sline, int n, const char *line, int len)
{
struct lline *lline;
- int len = strlen(line);
unsigned long this_mask = (1UL<<n);
if (line[len-1] == '\n')
len--;
sline->lost_tail = &lline->next;
}
-static void combine_diff(const unsigned char *parent, const char *ourtmp,
+struct combine_diff_state {
+ struct xdiff_emit_state xm;
+
+ unsigned int lno;
+ int ob, on, nb, nn;
+ unsigned long nmask;
+ int num_parent;
+ int n;
+ struct sline *sline;
+ struct sline *lost_bucket;
+};
+
+static void consume_line(void *state_, char *line, unsigned long len)
+{
+ struct combine_diff_state *state = state_;
+ if (5 < len && !memcmp("@@ -", line, 4)) {
+ if (parse_hunk_header(line, len,
+ &state->ob, &state->on,
+ &state->nb, &state->nn))
+ return;
+ state->lno = state->nb;
+ if (!state->nb)
+ /* @@ -1,2 +0,0 @@ to remove the
+ * first two lines...
+ */
+ state->nb = 1;
+ if (state->nn == 0)
+ /* @@ -X,Y +N,0 @@ removed Y lines
+ * that would have come *after* line N
+ * in the result. Our lost buckets hang
+ * to the line after the removed lines,
+ */
+ state->lost_bucket = &state->sline[state->nb];
+ else
+ state->lost_bucket = &state->sline[state->nb-1];
+ if (!state->sline[state->nb-1].p_lno)
+ state->sline[state->nb-1].p_lno =
+ xcalloc(state->num_parent,
+ sizeof(unsigned long));
+ state->sline[state->nb-1].p_lno[state->n] = state->ob;
+ return;
+ }
+ if (!state->lost_bucket)
+ return; /* not in any hunk yet */
+ switch (line[0]) {
+ case '-':
+ append_lost(state->lost_bucket, state->n, line+1, len-1);
+ break;
+ case '+':
+ state->sline[state->lno-1].flag |= state->nmask;
+ state->lno++;
+ break;
+ }
+}
+
+static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
struct sline *sline, int cnt, int n, int num_parent)
{
- FILE *in;
- char parent_tmp[TMPPATHLEN];
- char cmd[TMPPATHLEN * 2 + 1024];
- char line[MAXLINELEN];
- unsigned int lno, ob, on, nb, nn, p_lno;
+ unsigned int p_lno, lno;
unsigned long nmask = (1UL << n);
- struct sline *lost_bucket = NULL;
-
- write_temp_blob(parent_tmp, parent);
- sprintf(cmd, "diff --unified=0 -La/x -Lb/x '%s' '%s'",
- parent_tmp, ourtmp);
- in = popen(cmd, "r");
- if (!in)
- die("cannot spawn %s", cmd);
-
- lno = 1;
- while (fgets(line, sizeof(line), in) != NULL) {
- int len = strlen(line);
- if (5 < len && !memcmp("@@ -", line, 4)) {
- if (parse_hunk_header(line, len,
- &ob, &on, &nb, &nn))
- break;
- lno = nb;
- if (!nb)
- /* @@ -1,2 +0,0 @@ to remove the
- * first two lines...
- */
- nb = 1;
- if (nn == 0)
- /* @@ -X,Y +N,0 @@ removed Y lines
- * that would have come *after* line N
- * in the result. Our lost buckets hang
- * to the line after the removed lines,
- */
- lost_bucket = &sline[nb];
- else
- lost_bucket = &sline[nb-1];
- if (!sline[nb-1].p_lno)
- sline[nb-1].p_lno =
- xcalloc(num_parent,
- sizeof(unsigned long));
- sline[nb-1].p_lno[n] = ob;
- continue;
- }
- if (!lost_bucket)
- continue; /* not in any hunk yet */
- switch (line[0]) {
- case '-':
- append_lost(lost_bucket, n, line+1);
- break;
- case '+':
- sline[lno-1].flag |= nmask;
- lno++;
- break;
- }
- }
- fclose(in);
- unlink(parent_tmp);
+ xpparam_t xpp;
+ xdemitconf_t xecfg;
+ mmfile_t parent_file;
+ xdemitcb_t ecb;
+ struct combine_diff_state state;
+ unsigned long sz;
+
+ if (!cnt)
+ return; /* result deleted */
+
+ parent_file.ptr = grab_blob(parent, &sz);
+ parent_file.size = sz;
+ xpp.flags = XDF_NEED_MINIMAL;
+ xecfg.ctxlen = 0;
+ xecfg.flags = 0;
+ ecb.outf = xdiff_outf;
+ ecb.priv = &state;
+ memset(&state, 0, sizeof(state));
+ state.xm.consume = consume_line;
+ state.nmask = nmask;
+ state.sline = sline;
+ state.lno = 1;
+ state.num_parent = num_parent;
+ state.n = n;
+
+ xdl_diff(&parent_file, result_file, &xpp, &xecfg, &ecb);
+ free(parent_file.ptr);
/* Assign line numbers for this parent.
*
int i;
unsigned long lno = 0;
+ if (!cnt)
+ return; /* result deleted */
+
while (1) {
struct sline *sl = &sline[lno];
int hunk_end;
sline->flag |= imask;
sline++;
}
+ /* the overall size of the file (sline[cnt]) */
+ sline->p_lno[i] = sline->p_lno[j];
}
-int show_combined_diff(struct combine_diff_path *elem, int num_parent,
- int dense, const char *header, int show_empty)
+static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
+ int dense, const char *header,
+ struct diff_options *opt)
{
- unsigned long size, cnt, lno;
+ unsigned long result_size, cnt, lno;
char *result, *cp, *ep;
struct sline *sline; /* survived lines */
+ int mode_differs = 0;
int i, show_hunks, shown_header = 0;
- char ourtmp_buf[TMPPATHLEN];
- char *ourtmp = ourtmp_buf;
+ int working_tree_file = !memcmp(elem->sha1, null_sha1, 20);
+ int abbrev = opt->full_index ? 40 : DEFAULT_ABBREV;
+ mmfile_t result_file;
/* Read the result of merge first */
- if (memcmp(elem->sha1, null_sha1, 20)) {
- result = grab_blob(elem->sha1, &size);
- write_to_temp_file(ourtmp, result, size);
- }
+ if (!working_tree_file)
+ result = grab_blob(elem->sha1, &result_size);
else {
+ /* Used by diff-tree to read from the working tree */
struct stat st;
int fd;
- ourtmp = elem->path;
- if (0 <= (fd = open(ourtmp, O_RDONLY)) &&
+ if (0 <= (fd = open(elem->path, O_RDONLY)) &&
!fstat(fd, &st)) {
int len = st.st_size;
int cnt = 0;
- size = len;
+ elem->mode = canon_mode(st.st_mode);
+ result_size = len;
result = xmalloc(len + 1);
while (cnt < len) {
int done = xread(fd, result+cnt, len-cnt);
if (done == 0)
break;
if (done < 0)
- die("read error '%s'", ourtmp);
+ die("read error '%s'", elem->path);
cnt += done;
}
result[len] = 0;
}
else {
/* deleted file */
- size = 0;
+ result_size = 0;
+ elem->mode = 0;
result = xmalloc(1);
result[0] = 0;
- ourtmp = "/dev/null";
}
if (0 <= fd)
close(fd);
}
- for (cnt = 0, cp = result; cp - result < size; cp++) {
+ for (cnt = 0, cp = result; cp - result < result_size; cp++) {
if (*cp == '\n')
cnt++;
}
- if (result[size-1] != '\n')
+ if (result_size && result[result_size-1] != '\n')
cnt++; /* incomplete line */
sline = xcalloc(cnt+1, sizeof(*sline));
ep = result;
sline[0].bol = result;
- for (lno = 0, cp = result; cp - result < size; cp++) {
+ for (lno = 0; lno <= cnt; lno++) {
+ sline[lno].lost_tail = &sline[lno].lost_head;
+ sline[lno].flag = 0;
+ }
+ for (lno = 0, cp = result; cp - result < result_size; cp++) {
if (*cp == '\n') {
- sline[lno].lost_tail = &sline[lno].lost_head;
sline[lno].len = cp - sline[lno].bol;
- sline[lno].flag = 0;
lno++;
if (lno < cnt)
sline[lno].bol = cp + 1;
}
}
- if (result[size-1] != '\n') {
- sline[cnt-1].lost_tail = &sline[cnt-1].lost_head;
- sline[cnt-1].len = size - (sline[cnt-1].bol - result);
- sline[cnt-1].flag = 0;
- }
+ if (result_size && result[result_size-1] != '\n')
+ sline[cnt-1].len = result_size - (sline[cnt-1].bol - result);
+
+ result_file.ptr = result;
+ result_file.size = result_size;
sline[0].p_lno = xcalloc((cnt+1) * num_parent, sizeof(unsigned long));
for (lno = 0; lno < cnt; lno++)
for (i = 0; i < num_parent; i++) {
int j;
for (j = 0; j < i; j++) {
- if (!memcmp(elem->parent_sha1[i],
- elem->parent_sha1[j], 20)) {
+ if (!memcmp(elem->parent[i].sha1,
+ elem->parent[j].sha1, 20)) {
reuse_combine_diff(sline, cnt, i, j);
break;
}
}
if (i <= j)
- combine_diff(elem->parent_sha1[i], ourtmp, sline,
+ combine_diff(elem->parent[i].sha1, &result_file, sline,
cnt, i, num_parent);
+ if (elem->parent[i].mode != elem->mode)
+ mode_differs = 1;
}
show_hunks = make_hunks(sline, cnt, num_parent, dense);
- if (show_hunks) {
+ if (show_hunks || mode_differs || working_tree_file) {
+ const char *abb;
+
if (header) {
shown_header++;
- puts(header);
+ printf("%s%c", header, opt->line_termination);
}
printf("diff --%s ", dense ? "cc" : "combined");
if (quote_c_style(elem->path, NULL, NULL, 0))
putchar('\n');
printf("index ");
for (i = 0; i < num_parent; i++) {
- printf("%s%s",
- i ? "," : "",
- find_unique_abbrev(elem->parent_sha1[i],
- DEFAULT_ABBREV));
+ abb = find_unique_abbrev(elem->parent[i].sha1,
+ abbrev);
+ printf("%s%s", i ? "," : "", abb);
+ }
+ abb = find_unique_abbrev(elem->sha1, abbrev);
+ printf("..%s\n", abb);
+
+ if (mode_differs) {
+ int added = !!elem->mode;
+ for (i = 0; added && i < num_parent; i++)
+ if (elem->parent[i].status !=
+ DIFF_STATUS_ADDED)
+ added = 0;
+ if (added)
+ printf("new file mode %06o", elem->mode);
+ else {
+ if (!elem->mode)
+ printf("deleted file ");
+ printf("mode ");
+ for (i = 0; i < num_parent; i++) {
+ printf("%s%06o", i ? "," : "",
+ elem->parent[i].mode);
+ }
+ if (elem->mode)
+ printf("..%06o", elem->mode);
+ }
+ putchar('\n');
}
- printf("..%s\n",
- find_unique_abbrev(elem->sha1, DEFAULT_ABBREV));
dump_sline(sline, cnt, num_parent);
}
- if (ourtmp == ourtmp_buf)
- unlink(ourtmp);
free(result);
for (i = 0; i < cnt; i++) {
return shown_header;
}
-int diff_tree_combined_merge(const unsigned char *sha1,
- const char *header,
- int show_empty_merge, int dense)
+#define COLONS "::::::::::::::::::::::::::::::::"
+
+static void show_raw_diff(struct combine_diff_path *p, int num_parent, const char *header, struct diff_options *opt)
+{
+ int i, offset, mod_type = 'A';
+ const char *prefix;
+ int line_termination, inter_name_termination;
+
+ line_termination = opt->line_termination;
+ inter_name_termination = '\t';
+ if (!line_termination)
+ inter_name_termination = 0;
+
+ if (header)
+ printf("%s%c", header, line_termination);
+
+ for (i = 0; i < num_parent; i++) {
+ if (p->parent[i].mode)
+ mod_type = 'M';
+ }
+ if (!p->mode)
+ mod_type = 'D';
+
+ if (opt->output_format == DIFF_FORMAT_RAW) {
+ offset = strlen(COLONS) - num_parent;
+ if (offset < 0)
+ offset = 0;
+ prefix = COLONS + offset;
+
+ /* Show the modes */
+ for (i = 0; i < num_parent; i++) {
+ printf("%s%06o", prefix, p->parent[i].mode);
+ prefix = " ";
+ }
+ printf("%s%06o", prefix, p->mode);
+
+ /* Show sha1's */
+ for (i = 0; i < num_parent; i++)
+ printf(" %s", diff_unique_abbrev(p->parent[i].sha1,
+ opt->abbrev));
+ printf(" %s ", diff_unique_abbrev(p->sha1, opt->abbrev));
+ }
+
+ if (opt->output_format == DIFF_FORMAT_RAW ||
+ opt->output_format == DIFF_FORMAT_NAME_STATUS) {
+ for (i = 0; i < num_parent; i++)
+ putchar(p->parent[i].status);
+ putchar(inter_name_termination);
+ }
+
+ if (line_termination) {
+ if (quote_c_style(p->path, NULL, NULL, 0))
+ quote_c_style(p->path, NULL, stdout, 0);
+ else
+ printf("%s", p->path);
+ putchar(line_termination);
+ }
+ else {
+ printf("%s%c", p->path, line_termination);
+ }
+}
+
+int show_combined_diff(struct combine_diff_path *p,
+ int num_parent,
+ int dense,
+ const char *header,
+ struct diff_options *opt)
+{
+ if (!p->len)
+ return 0;
+ switch (opt->output_format) {
+ case DIFF_FORMAT_RAW:
+ case DIFF_FORMAT_NAME_STATUS:
+ case DIFF_FORMAT_NAME:
+ show_raw_diff(p, num_parent, header, opt);
+ return 1;
+
+ default:
+ case DIFF_FORMAT_PATCH:
+ return show_patch_diff(p, num_parent, dense, header, opt);
+ }
+}
+
+const char *diff_tree_combined_merge(const unsigned char *sha1,
+ const char *header, int dense,
+ struct diff_options *opt)
{
struct commit *commit = lookup_commit(sha1);
struct diff_options diffopts;
struct combine_diff_path *p, *paths = NULL;
int num_parent, i, num_paths;
- diff_setup(&diffopts);
+ diffopts = *opt;
diffopts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ diffopts.with_raw = 0;
diffopts.recursive = 1;
/* count parents */
struct commit *parent = parents->item;
diff_tree_sha1(parent->object.sha1, commit->object.sha1, "",
&diffopts);
+ diffcore_std(&diffopts);
paths = intersect_paths(paths, i, num_parent);
diff_flush(&diffopts);
}
if (p->len)
num_paths++;
}
- if (num_paths || show_empty_merge) {
+ if (num_paths) {
+ if (opt->with_raw) {
+ int saved_format = opt->output_format;
+ opt->output_format = DIFF_FORMAT_RAW;
+ for (p = paths; p; p = p->next) {
+ if (show_combined_diff(p, num_parent, dense,
+ header, opt))
+ header = NULL;
+ }
+ opt->output_format = saved_format;
+ }
for (p = paths; p; p = p->next) {
- if (!p->len)
- continue;
- if (show_combined_diff(p, num_parent, dense, header,
- show_empty_merge))
+ if (show_combined_diff(p, num_parent, dense,
+ header, opt))
header = NULL;
}
}
paths = paths->next;
free(tmp);
}
- return 0;
+ return header;
}