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-rw-r--r--Makefile1
-rw-r--r--cgit.c5
-rw-r--r--cgit.css99
-rw-r--r--cgit.h2
-rw-r--r--cgitrc.5.txt4
-rw-r--r--ui-commit.c11
-rw-r--r--ui-diff.c62
-rw-r--r--ui-log.c4
-rw-r--r--ui-refs.c2
-rw-r--r--ui-shared.c34
-rw-r--r--ui-shared.h5
-rw-r--r--ui-ssdiff.c369
-rw-r--r--ui-ssdiff.h13
13 files changed, 586 insertions, 25 deletions
diff --git a/Makefile b/Makefile
index 4e101d3..f8a4d47 100644
--- a/Makefile
+++ b/Makefile
@@ -93,6 +93,7 @@ OBJECTS += ui-refs.o
93OBJECTS += ui-repolist.o 93OBJECTS += ui-repolist.o
94OBJECTS += ui-shared.o 94OBJECTS += ui-shared.o
95OBJECTS += ui-snapshot.o 95OBJECTS += ui-snapshot.o
96OBJECTS += ui-ssdiff.o
96OBJECTS += ui-stats.o 97OBJECTS += ui-stats.o
97OBJECTS += ui-summary.o 98OBJECTS += ui-summary.o
98OBJECTS += ui-tag.o 99OBJECTS += ui-tag.o
diff --git a/cgit.c b/cgit.c
index 08cb5d2..4f68a4b 100644
--- a/cgit.c
+++ b/cgit.c
@@ -184,6 +184,8 @@ void config_cb(const char *name, const char *value)
184 ctx.cfg.summary_branches = atoi(value); 184 ctx.cfg.summary_branches = atoi(value);
185 else if (!strcmp(name, "summary-tags")) 185 else if (!strcmp(name, "summary-tags"))
186 ctx.cfg.summary_tags = atoi(value); 186 ctx.cfg.summary_tags = atoi(value);
187 else if (!strcmp(name, "side-by-side-diffs"))
188 ctx.cfg.ssdiff = atoi(value);
187 else if (!strcmp(name, "agefile")) 189 else if (!strcmp(name, "agefile"))
188 ctx.cfg.agefile = xstrdup(value); 190 ctx.cfg.agefile = xstrdup(value);
189 else if (!strcmp(name, "renamelimit")) 191 else if (!strcmp(name, "renamelimit"))
@@ -242,6 +244,8 @@ static void querystring_cb(const char *name, const char *value)
242 ctx.qry.showmsg = atoi(value); 244 ctx.qry.showmsg = atoi(value);
243 } else if (!strcmp(name, "period")) { 245 } else if (!strcmp(name, "period")) {
244 ctx.qry.period = xstrdup(value); 246 ctx.qry.period = xstrdup(value);
247 } else if (!strcmp(name, "ss")) {
248 ctx.qry.ssdiff = atoi(value);
245 } 249 }
246} 250}
247 251
@@ -284,6 +288,7 @@ static void prepare_context(struct cgit_context *ctx)
284 ctx->cfg.summary_branches = 10; 288 ctx->cfg.summary_branches = 10;
285 ctx->cfg.summary_log = 10; 289 ctx->cfg.summary_log = 10;
286 ctx->cfg.summary_tags = 10; 290 ctx->cfg.summary_tags = 10;
291 ctx->cfg.ssdiff = 0;
287 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG")); 292 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
288 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST")); 293 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
289 ctx->env.https = xstrdupn(getenv("HTTPS")); 294 ctx->env.https = xstrdupn(getenv("HTTPS"));
diff --git a/cgit.css b/cgit.css
index ef7d3c1..0cb894a 100644
--- a/cgit.css
+++ b/cgit.css
@@ -606,3 +606,102 @@ table.hgraph div.bar {
606 background-color: #eee; 606 background-color: #eee;
607 height: 1em; 607 height: 1em;
608} 608}
609
610table.ssdiff {
611 width: 100%;
612}
613
614table.ssdiff td {
615 font-size: 75%;
616 font-family: monospace;
617 white-space: pre;
618 padding: 1px 4px 1px 4px;
619 border-left: solid 1px #aaa;
620 border-right: solid 1px #aaa;
621}
622
623table.ssdiff td.add {
624 color: black;
625 background: #cfc;
626 min-width: 50%;
627}
628
629table.ssdiff td.add_dark {
630 color: black;
631 background: #aca;
632 min-width: 50%;
633}
634
635table.ssdiff span.add {
636 background: #cfc;
637 font-weight: bold;
638}
639
640table.ssdiff td.del {
641 color: black;
642 background: #fcc;
643 min-width: 50%;
644}
645
646table.ssdiff td.del_dark {
647 color: black;
648 background: #caa;
649 min-width: 50%;
650}
651
652table.ssdiff span.del {
653 background: #fcc;
654 font-weight: bold;
655}
656
657table.ssdiff td.changed {
658 color: black;
659 background: #ffc;
660 min-width: 50%;
661}
662
663table.ssdiff td.changed_dark {
664 color: black;
665 background: #cca;
666 min-width: 50%;
667}
668
669table.ssdiff td.lineno {
670 color: black;
671 background: #eee;
672 text-align: right;
673 width: 3em;
674 min-width: 3em;
675}
676
677table.ssdiff td.hunk {
678 color: #black;
679 background: #ccf;
680 border-top: solid 1px #aaa;
681 border-bottom: solid 1px #aaa;
682}
683
684table.ssdiff td.head {
685 border-top: solid 1px #aaa;
686 border-bottom: solid 1px #aaa;
687}
688
689table.ssdiff td.head div.head {
690 font-weight: bold;
691 color: black;
692}
693
694table.ssdiff td.foot {
695 border-top: solid 1px #aaa;
696 border-left: none;
697 border-right: none;
698 border-bottom: none;
699}
700
701table.ssdiff td.space {
702 border: none;
703}
704
705table.ssdiff td.space div {
706 min-height: 3em;
707} \ No newline at end of file
diff --git a/cgit.h b/cgit.h
index 39853df..5941ec0 100644
--- a/cgit.h
+++ b/cgit.h
@@ -143,6 +143,7 @@ struct cgit_query {
143 int nohead; 143 int nohead;
144 char *sort; 144 char *sort;
145 int showmsg; 145 int showmsg;
146 int ssdiff;
146}; 147};
147 148
148struct cgit_config { 149struct cgit_config {
@@ -195,6 +196,7 @@ struct cgit_config {
195 int summary_branches; 196 int summary_branches;
196 int summary_log; 197 int summary_log;
197 int summary_tags; 198 int summary_tags;
199 int ssdiff;
198 struct string_list mimetypes; 200 struct string_list mimetypes;
199 struct cgit_filter *about_filter; 201 struct cgit_filter *about_filter;
200 struct cgit_filter *commit_filter; 202 struct cgit_filter *commit_filter;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index e69140b..70e4c78 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -245,6 +245,10 @@ section::
245 after this option will inherit the current section name. Default value: 245 after this option will inherit the current section name. Default value:
246 none. 246 none.
247 247
248side-by-side-diffs::
249 If set to "1" shows side-by-side diffs instead of unidiffs per
250 default. Default value: "0".
251
248snapshots:: 252snapshots::
249 Text which specifies the default set of snapshot formats generated by 253 Text which specifies the default set of snapshot formats generated by
250 cgit. The value is a space-separated list of zero or more of the 254 cgit. The value is a space-separated list of zero or more of the
diff --git a/ui-commit.c b/ui-commit.c
index f5b0ae5..b5e3c01 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -58,9 +58,14 @@ void cgit_print_commit(char *hex)
58 html("</td></tr>\n"); 58 html("</td></tr>\n");
59 html("<tr><th>commit</th><td colspan='2' class='sha1'>"); 59 html("<tr><th>commit</th><td colspan='2' class='sha1'>");
60 tmp = sha1_to_hex(commit->object.sha1); 60 tmp = sha1_to_hex(commit->object.sha1);
61 cgit_commit_link(tmp, NULL, NULL, ctx.qry.head, tmp); 61 cgit_commit_link(tmp, NULL, NULL, ctx.qry.head, tmp, 0);
62 html(" ("); 62 html(" (");
63 cgit_patch_link("patch", NULL, NULL, NULL, tmp); 63 cgit_patch_link("patch", NULL, NULL, NULL, tmp);
64 html(") (");
65 if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
66 cgit_commit_link("unidiff", NULL, NULL, ctx.qry.head, tmp, 1);
67 else
68 cgit_commit_link("side-by-side diff", NULL, NULL, ctx.qry.head, tmp, 1);
64 html(")</td></tr>\n"); 69 html(")</td></tr>\n");
65 html("<tr><th>tree</th><td colspan='2' class='sha1'>"); 70 html("<tr><th>tree</th><td colspan='2' class='sha1'>");
66 tmp = xstrdup(hex); 71 tmp = xstrdup(hex);
@@ -78,10 +83,10 @@ void cgit_print_commit(char *hex)
78 html("<tr><th>parent</th>" 83 html("<tr><th>parent</th>"
79 "<td colspan='2' class='sha1'>"); 84 "<td colspan='2' class='sha1'>");
80 cgit_commit_link(sha1_to_hex(p->item->object.sha1), NULL, NULL, 85 cgit_commit_link(sha1_to_hex(p->item->object.sha1), NULL, NULL,
81 ctx.qry.head, sha1_to_hex(p->item->object.sha1)); 86 ctx.qry.head, sha1_to_hex(p->item->object.sha1), 0);
82 html(" ("); 87 html(" (");
83 cgit_diff_link("diff", NULL, NULL, ctx.qry.head, hex, 88 cgit_diff_link("diff", NULL, NULL, ctx.qry.head, hex,
84 sha1_to_hex(p->item->object.sha1), NULL); 89 sha1_to_hex(p->item->object.sha1), NULL, 0);
85 html(")</td></tr>"); 90 html(")</td></tr>");
86 parents++; 91 parents++;
87 } 92 }
diff --git a/ui-diff.c b/ui-diff.c
index 2196745..a92a768 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -9,6 +9,7 @@
9#include "cgit.h" 9#include "cgit.h"
10#include "html.h" 10#include "html.h"
11#include "ui-shared.h" 11#include "ui-shared.h"
12#include "ui-ssdiff.h"
12 13
13unsigned char old_rev_sha1[20]; 14unsigned char old_rev_sha1[20];
14unsigned char new_rev_sha1[20]; 15unsigned char new_rev_sha1[20];
@@ -32,6 +33,7 @@ static struct fileinfo {
32 int binary:1; 33 int binary:1;
33} *items; 34} *items;
34 35
36static int use_ssdiff = 0;
35 37
36static void print_fileinfo(struct fileinfo *info) 38static void print_fileinfo(struct fileinfo *info)
37{ 39{
@@ -83,7 +85,7 @@ static void print_fileinfo(struct fileinfo *info)
83 } 85 }
84 htmlf("</td><td class='%s'>", class); 86 htmlf("</td><td class='%s'>", class);
85 cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1, 87 cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
86 ctx.qry.sha2, info->new_path); 88 ctx.qry.sha2, info->new_path, 0);
87 if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) 89 if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED)
88 htmlf(" (%s from %s)", 90 htmlf(" (%s from %s)",
89 info->status == DIFF_STATUS_COPIED ? "copied" : "renamed", 91 info->status == DIFF_STATUS_COPIED ? "copied" : "renamed",
@@ -158,7 +160,7 @@ void cgit_print_diffstat(const unsigned char *old_sha1,
158 160
159 html("<div class='diffstat-header'>"); 161 html("<div class='diffstat-header'>");
160 cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1, 162 cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
161 ctx.qry.sha2, NULL); 163 ctx.qry.sha2, NULL, 0);
162 html("</div>"); 164 html("</div>");
163 html("<table summary='diffstat' class='diffstat'>"); 165 html("<table summary='diffstat' class='diffstat'>");
164 max_changes = 0; 166 max_changes = 0;
@@ -246,26 +248,54 @@ static void header(unsigned char *sha1, char *path1, int mode1,
246 html("</div>"); 248 html("</div>");
247} 249}
248 250
251static void print_ssdiff_link()
252{
253 if (!strcmp(ctx.qry.page, "diff")) {
254 if (use_ssdiff)
255 cgit_diff_link("Unidiff", NULL, NULL, ctx.qry.head,
256 ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1);
257 else
258 cgit_diff_link("Side-by-side diff", NULL, NULL,
259 ctx.qry.head, ctx.qry.sha1,
260 ctx.qry.sha2, ctx.qry.path, 1);
261 }
262}
263
249static void filepair_cb(struct diff_filepair *pair) 264static void filepair_cb(struct diff_filepair *pair)
250{ 265{
251 unsigned long old_size = 0; 266 unsigned long old_size = 0;
252 unsigned long new_size = 0; 267 unsigned long new_size = 0;
253 int binary = 0; 268 int binary = 0;
269 linediff_fn print_line_fn = print_line;
254 270
271 if (use_ssdiff) {
272 cgit_ssdiff_header_begin();
273 print_line_fn = cgit_ssdiff_line_cb;
274 }
255 header(pair->one->sha1, pair->one->path, pair->one->mode, 275 header(pair->one->sha1, pair->one->path, pair->one->mode,
256 pair->two->sha1, pair->two->path, pair->two->mode); 276 pair->two->sha1, pair->two->path, pair->two->mode);
277 if (use_ssdiff)
278 cgit_ssdiff_header_end();
257 if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) { 279 if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
258 if (S_ISGITLINK(pair->one->mode)) 280 if (S_ISGITLINK(pair->one->mode))
259 print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52); 281 print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
260 if (S_ISGITLINK(pair->two->mode)) 282 if (S_ISGITLINK(pair->two->mode))
261 print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52); 283 print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
284 if (use_ssdiff)
285 cgit_ssdiff_footer();
262 return; 286 return;
263 } 287 }
264 if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, 288 if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
265 &new_size, &binary, print_line)) 289 &new_size, &binary, print_line_fn))
266 cgit_print_error("Error running diff"); 290 cgit_print_error("Error running diff");
267 if (binary) 291 if (binary) {
268 html("Binary files differ"); 292 if (use_ssdiff)
293 html("<tr><td colspan='4'>Binary files differ</td></tr>");
294 else
295 html("Binary files differ");
296 }
297 if (use_ssdiff)
298 cgit_ssdiff_footer();
269} 299}
270 300
271void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix) 301void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix)
@@ -303,11 +333,21 @@ void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefi
303 if (!commit2 || parse_commit(commit2)) 333 if (!commit2 || parse_commit(commit2))
304 cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1))); 334 cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(old_rev_sha1)));
305 } 335 }
336
337 if ((ctx.qry.ssdiff && !ctx.cfg.ssdiff) || (!ctx.qry.ssdiff && ctx.cfg.ssdiff))
338 use_ssdiff = 1;
339
340 print_ssdiff_link();
306 cgit_print_diffstat(old_rev_sha1, new_rev_sha1); 341 cgit_print_diffstat(old_rev_sha1, new_rev_sha1);
307 342
308 html("<table summary='diff' class='diff'>"); 343 if (use_ssdiff) {
309 html("<tr><td>"); 344 html("<table summary='ssdiff' class='ssdiff'>");
345 } else {
346 html("<table summary='diff' class='diff'>");
347 html("<tr><td>");
348 }
310 cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix); 349 cgit_diff_tree(old_rev_sha1, new_rev_sha1, filepair_cb, prefix);
311 html("</td></tr>"); 350 if (!use_ssdiff)
351 html("</td></tr>");
312 html("</table>"); 352 html("</table>");
313} 353}
diff --git a/ui-log.c b/ui-log.c
index f3132c9..0947604 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -66,7 +66,7 @@ void show_commit_decorations(struct commit *commit)
66 else { 66 else {
67 strncpy(buf, deco->name, sizeof(buf) - 1); 67 strncpy(buf, deco->name, sizeof(buf) - 1);
68 cgit_commit_link(buf, NULL, "deco", ctx.qry.head, 68 cgit_commit_link(buf, NULL, "deco", ctx.qry.head,
69 sha1_to_hex(commit->object.sha1)); 69 sha1_to_hex(commit->object.sha1), 0);
70 } 70 }
71 deco = deco->next; 71 deco = deco->next;
72 } 72 }
@@ -89,7 +89,7 @@ void print_commit(struct commit *commit)
89 htmlf("</td><td%s>", 89 htmlf("</td><td%s>",
90 ctx.qry.showmsg ? " class='logsubject'" : ""); 90 ctx.qry.showmsg ? " class='logsubject'" : "");
91 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head, 91 cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
92 sha1_to_hex(commit->object.sha1)); 92 sha1_to_hex(commit->object.sha1), 0);
93 show_commit_decorations(commit); 93 show_commit_decorations(commit);
94 html("</td><td>"); 94 html("</td><td>");
95 html_txt(info->author); 95 html_txt(info->author);
diff --git a/ui-refs.c b/ui-refs.c
index d3b4f6e..33d9bec 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -74,7 +74,7 @@ static int print_branch(struct refinfo *ref)
74 html("</td><td>"); 74 html("</td><td>");
75 75
76 if (ref->object->type == OBJ_COMMIT) { 76 if (ref->object->type == OBJ_COMMIT) {
77 cgit_commit_link(info->subject, NULL, NULL, name, NULL); 77 cgit_commit_link(info->subject, NULL, NULL, name, NULL, 0);
78 html("</td><td>"); 78 html("</td><td>");
79 html_txt(info->author); 79 html_txt(info->author);
80 html("</td><td colspan='2'>"); 80 html("</td><td colspan='2'>");
diff --git a/ui-shared.c b/ui-shared.c
index 3a9e67b..08ea003 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -317,7 +317,7 @@ void cgit_log_link(char *name, char *title, char *class, char *head,
317} 317}
318 318
319void cgit_commit_link(char *name, char *title, char *class, char *head, 319void cgit_commit_link(char *name, char *title, char *class, char *head,
320 char *rev) 320 char *rev, int toggle_ssdiff)
321{ 321{
322 if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) { 322 if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
323 name[ctx.cfg.max_msg_len] = '\0'; 323 name[ctx.cfg.max_msg_len] = '\0';
@@ -325,7 +325,23 @@ void cgit_commit_link(char *name, char *title, char *class, char *head,
325 name[ctx.cfg.max_msg_len - 2] = '.'; 325 name[ctx.cfg.max_msg_len - 2] = '.';
326 name[ctx.cfg.max_msg_len - 3] = '.'; 326 name[ctx.cfg.max_msg_len - 3] = '.';
327 } 327 }
328 reporevlink("commit", name, title, class, head, rev, NULL); 328
329 char *delim;
330
331 delim = repolink(title, class, "commit", head, NULL);
332 if (rev && strcmp(rev, ctx.qry.head)) {
333 html(delim);
334 html("id=");
335 html_url_arg(rev);
336 delim = "&amp;";
337 }
338 if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
339 html(delim);
340 html("ss=1");
341 }
342 html("'>");
343 html_txt(name);
344 html("</a>");
329} 345}
330 346
331void cgit_refs_link(char *name, char *title, char *class, char *head, 347void cgit_refs_link(char *name, char *title, char *class, char *head,
@@ -341,7 +357,8 @@ void cgit_snapshot_link(char *name, char *title, char *class, char *head,
341} 357}
342 358
343void cgit_diff_link(char *name, char *title, char *class, char *head, 359void cgit_diff_link(char *name, char *title, char *class, char *head,
344 char *new_rev, char *old_rev, char *path) 360 char *new_rev, char *old_rev, char *path,
361 int toggle_ssdiff)
345{ 362{
346 char *delim; 363 char *delim;
347 364
@@ -356,6 +373,11 @@ void cgit_diff_link(char *name, char *title, char *class, char *head,
356 html(delim); 373 html(delim);
357 html("id2="); 374 html("id2=");
358 html_url_arg(old_rev); 375 html_url_arg(old_rev);
376 delim = "&amp;";
377 }
378 if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
379 html(delim);
380 html("ss=1");
359 } 381 }
360 html("'>"); 382 html("'>");
361 html_txt(name); 383 html_txt(name);
@@ -383,7 +405,7 @@ void cgit_object_link(struct object *obj)
383 shortrev[10] = '\0'; 405 shortrev[10] = '\0';
384 if (obj->type == OBJ_COMMIT) { 406 if (obj->type == OBJ_COMMIT) {
385 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL, 407 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
386 ctx.qry.head, fullrev); 408 ctx.qry.head, fullrev, 0);
387 return; 409 return;
388 } else if (obj->type == OBJ_TREE) 410 } else if (obj->type == OBJ_TREE)
389 page = "tree"; 411 page = "tree";
@@ -695,9 +717,9 @@ void cgit_print_pageheader(struct cgit_context *ctx)
695 cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head, 717 cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head,
696 ctx->qry.sha1, NULL); 718 ctx->qry.sha1, NULL);
697 cgit_commit_link("commit", NULL, hc(cmd, "commit"), 719 cgit_commit_link("commit", NULL, hc(cmd, "commit"),
698 ctx->qry.head, ctx->qry.sha1); 720 ctx->qry.head, ctx->qry.sha1, 0);
699 cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head, 721 cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
700 ctx->qry.sha1, ctx->qry.sha2, NULL); 722 ctx->qry.sha1, ctx->qry.sha2, NULL, 0);
701 if (ctx->repo->max_stats) 723 if (ctx->repo->max_stats)
702 cgit_stats_link("stats", NULL, hc(cmd, "stats"), 724 cgit_stats_link("stats", NULL, hc(cmd, "stats"),
703 ctx->qry.head, NULL); 725 ctx->qry.head, NULL);
diff --git a/ui-shared.h b/ui-shared.h
index b12aa89..9ebc1f9 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -23,7 +23,7 @@ extern void cgit_log_link(char *name, char *title, char *class, char *head,
23 char *rev, char *path, int ofs, char *grep, 23 char *rev, char *path, int ofs, char *grep,
24 char *pattern, int showmsg); 24 char *pattern, int showmsg);
25extern void cgit_commit_link(char *name, char *title, char *class, char *head, 25extern void cgit_commit_link(char *name, char *title, char *class, char *head,
26 char *rev); 26 char *rev, int toggle_ssdiff);
27extern void cgit_patch_link(char *name, char *title, char *class, char *head, 27extern void cgit_patch_link(char *name, char *title, char *class, char *head,
28 char *rev); 28 char *rev);
29extern void cgit_refs_link(char *name, char *title, char *class, char *head, 29extern void cgit_refs_link(char *name, char *title, char *class, char *head,
@@ -31,7 +31,8 @@ extern void cgit_refs_link(char *name, char *title, char *class, char *head,
31extern void cgit_snapshot_link(char *name, char *title, char *class, 31extern void cgit_snapshot_link(char *name, char *title, char *class,
32 char *head, char *rev, char *archivename); 32 char *head, char *rev, char *archivename);
33extern void cgit_diff_link(char *name, char *title, char *class, char *head, 33extern void cgit_diff_link(char *name, char *title, char *class, char *head,
34 char *new_rev, char *old_rev, char *path); 34 char *new_rev, char *old_rev, char *path,
35 int toggle_ssdiff);
35extern void cgit_stats_link(char *name, char *title, char *class, char *head, 36extern void cgit_stats_link(char *name, char *title, char *class, char *head,
36 char *path); 37 char *path);
37extern void cgit_object_link(struct object *obj); 38extern void cgit_object_link(struct object *obj);
diff --git a/ui-ssdiff.c b/ui-ssdiff.c
new file mode 100644
index 0000000..408e620
--- a/dev/null
+++ b/ui-ssdiff.c
@@ -0,0 +1,369 @@
1#include "cgit.h"
2#include "html.h"
3#include "ui-shared.h"
4
5extern int use_ssdiff;
6
7static int current_old_line, current_new_line;
8
9struct deferred_lines {
10 int line_no;
11 char *line;
12 struct deferred_lines *next;
13};
14
15static struct deferred_lines *deferred_old, *deferred_old_last;
16static struct deferred_lines *deferred_new, *deferred_new_last;
17
18static char *longest_common_subsequence(char *A, char *B)
19{
20 int i, j, ri;
21 int m = strlen(A);
22 int n = strlen(B);
23 int L[m + 1][n + 1];
24 int tmp1, tmp2;
25 int lcs_length;
26 char *result;
27
28 for (i = m; i >= 0; i--) {
29 for (j = n; j >= 0; j--) {
30 if (A[i] == '\0' || B[j] == '\0') {
31 L[i][j] = 0;
32 } else if (A[i] == B[j]) {
33 L[i][j] = 1 + L[i + 1][j + 1];
34 } else {
35 tmp1 = L[i + 1][j];
36 tmp2 = L[i][j + 1];
37 L[i][j] = (tmp1 > tmp2 ? tmp1 : tmp2);
38 }
39 }
40 }
41
42 lcs_length = L[0][0];
43 result = xmalloc(lcs_length + 2);
44 memset(result, 0, sizeof(*result) * (lcs_length + 2));
45
46 ri = 0;
47 i = 0;
48 j = 0;
49 while (i < m && j < n) {
50 if (A[i] == B[j]) {
51 result[ri] = A[i];
52 ri += 1;
53 i += 1;
54 j += 1;
55 } else if (L[i + 1][j] >= L[i][j + 1]) {
56 i += 1;
57 } else {
58 j += 1;
59 }
60 }
61 return result;
62}
63
64static int line_from_hunk(char *line, char type)
65{
66 char *buf1, *buf2;
67 int len;
68
69 buf1 = strchr(line, type);
70 if (buf1 == NULL)
71 return 0;
72 buf1 += 1;
73 buf2 = strchr(buf1, ',');
74 if (buf2 == NULL)
75 return 0;
76 len = buf2 - buf1;
77 buf2 = xmalloc(len + 1);
78 strncpy(buf2, buf1, len);
79 buf2[len] = '\0';
80 int res = atoi(buf2);
81 free(buf2);
82 return res;
83}
84
85static char *replace_tabs(char *line)
86{
87 char *prev_buf = line;
88 char *cur_buf;
89 int linelen = strlen(line);
90 int n_tabs = 0;
91 int i;
92 char *result;
93 char *spaces = " ";
94
95 if (linelen == 0) {
96 result = xmalloc(1);
97 result[0] = '\0';
98 return result;
99 }
100
101 for (i = 0; i < linelen; i++)
102 if (line[i] == '\t')
103 n_tabs += 1;
104 result = xmalloc(linelen + n_tabs * 8 + 1);
105 result[0] = '\0';
106
107 while (1) {
108 cur_buf = strchr(prev_buf, '\t');
109 if (!cur_buf) {
110 strcat(result, prev_buf);
111 break;
112 } else {
113 strcat(result, " ");
114 strncat(result, spaces, 8 - (strlen(result) % 8));
115 strncat(result, prev_buf, cur_buf - prev_buf);
116 }
117 prev_buf = cur_buf + 1;
118 }
119 return result;
120}
121
122static int calc_deferred_lines(struct deferred_lines *start)
123{
124 struct deferred_lines *item = start;
125 int result = 0;
126 while (item) {
127 result += 1;
128 item = item->next;
129 }
130 return result;
131}
132
133static void deferred_old_add(char *line, int line_no)
134{
135 struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines));
136 item->line = xstrdup(line);
137 item->line_no = line_no;
138 item->next = NULL;
139 if (deferred_old) {
140 deferred_old_last->next = item;
141 deferred_old_last = item;
142 } else {
143 deferred_old = deferred_old_last = item;
144 }
145}
146
147static void deferred_new_add(char *line, int line_no)
148{
149 struct deferred_lines *item = xmalloc(sizeof(struct deferred_lines));
150 item->line = xstrdup(line);
151 item->line_no = line_no;
152 item->next = NULL;
153 if (deferred_new) {
154 deferred_new_last->next = item;
155 deferred_new_last = item;
156 } else {
157 deferred_new = deferred_new_last = item;
158 }
159}
160
161static void print_part_with_lcs(char *class, char *line, char *lcs)
162{
163 int line_len = strlen(line);
164 int i, j;
165 char c[2] = " ";
166 int same = 1;
167
168 j = 0;
169 for (i = 0; i < line_len; i++) {
170 c[0] = line[i];
171 if (same) {
172 if (line[i] == lcs[j])
173 j += 1;
174 else {
175 same = 0;
176 htmlf("<span class='%s'>", class);
177 }
178 } else if (line[i] == lcs[j]) {
179 same = 1;
180 htmlf("</span>");
181 j += 1;
182 }
183 html_txt(c);
184 }
185}
186
187static void print_ssdiff_line(char *class,
188 int old_line_no,
189 char *old_line,
190 int new_line_no,
191 char *new_line, int individual_chars)
192{
193 char *lcs = NULL;
194 if (old_line)
195 old_line = replace_tabs(old_line + 1);
196 if (new_line)
197 new_line = replace_tabs(new_line + 1);
198 if (individual_chars && old_line && new_line)
199 lcs = longest_common_subsequence(old_line, new_line);
200 html("<tr>");
201 if (old_line_no > 0)
202 htmlf("<td class='lineno'>%d</td><td class='%s'>",
203 old_line_no, class);
204 else if (old_line)
205 htmlf("<td class='lineno'></td><td class='%s'>", class);
206 else
207 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
208 if (old_line) {
209 if (lcs)
210 print_part_with_lcs("del", old_line, lcs);
211 else
212 html_txt(old_line);
213 }
214
215 html("</td>");
216 if (new_line_no > 0)
217 htmlf("<td class='lineno'>%d</td><td class='%s'>",
218 new_line_no, class);
219 else if (new_line)
220 htmlf("<td class='lineno'></td><td class='%s'>", class);
221 else
222 htmlf("<td class='lineno'></td><td class='%s_dark'>", class);
223 if (new_line) {
224 if (lcs)
225 print_part_with_lcs("add", new_line, lcs);
226 else
227 html_txt(new_line);
228 }
229
230 html("</td></tr>");
231 if (lcs)
232 free(lcs);
233 if (new_line)
234 free(new_line);
235 if (old_line)
236 free(old_line);
237}
238
239static void print_deferred_old_lines()
240{
241 struct deferred_lines *iter_old, *tmp;
242 iter_old = deferred_old;
243 while (iter_old) {
244 print_ssdiff_line("del", iter_old->line_no,
245 iter_old->line, -1, NULL, 0);
246 tmp = iter_old->next;
247 free(iter_old);
248 iter_old = tmp;
249 }
250}
251
252static void print_deferred_new_lines()
253{
254 struct deferred_lines *iter_new, *tmp;
255 iter_new = deferred_new;
256 while (iter_new) {
257 print_ssdiff_line("add", -1, NULL,
258 iter_new->line_no, iter_new->line, 0);
259 tmp = iter_new->next;
260 free(iter_new);
261 iter_new = tmp;
262 }
263}
264
265static void print_deferred_changed_lines()
266{
267 struct deferred_lines *iter_old, *iter_new, *tmp;
268 int n_old_lines = calc_deferred_lines(deferred_old);
269 int n_new_lines = calc_deferred_lines(deferred_new);
270 int individual_chars = (n_old_lines == n_new_lines ? 1 : 0);
271
272 iter_old = deferred_old;
273 iter_new = deferred_new;
274 while (iter_old || iter_new) {
275 if (iter_old && iter_new)
276 print_ssdiff_line("changed", iter_old->line_no,
277 iter_old->line,
278 iter_new->line_no, iter_new->line,
279 individual_chars);
280 else if (iter_old)
281 print_ssdiff_line("changed", iter_old->line_no,
282 iter_old->line, -1, NULL, 0);
283 else if (iter_new)
284 print_ssdiff_line("changed", -1, NULL,
285 iter_new->line_no, iter_new->line, 0);
286 if (iter_old) {
287 tmp = iter_old->next;
288 free(iter_old);
289 iter_old = tmp;
290 }
291
292 if (iter_new) {
293 tmp = iter_new->next;
294 free(iter_new);
295 iter_new = tmp;
296 }
297 }
298}
299
300void cgit_ssdiff_print_deferred_lines()
301{
302 if (!deferred_old && !deferred_new)
303 return;
304 if (deferred_old && !deferred_new)
305 print_deferred_old_lines();
306 else if (!deferred_old && deferred_new)
307 print_deferred_new_lines();
308 else
309 print_deferred_changed_lines();
310 deferred_old = deferred_old_last = NULL;
311 deferred_new = deferred_new_last = NULL;
312}
313
314/*
315 * print a single line returned from xdiff
316 */
317void cgit_ssdiff_line_cb(char *line, int len)
318{
319 char c = line[len - 1];
320 line[len - 1] = '\0';
321 if (line[0] == '@') {
322 current_old_line = line_from_hunk(line, '-');
323 current_new_line = line_from_hunk(line, '+');
324 }
325
326 if (line[0] == ' ') {
327 if (deferred_old || deferred_new)
328 cgit_ssdiff_print_deferred_lines();
329 print_ssdiff_line("ctx", current_old_line, line,
330 current_new_line, line, 0);
331 current_old_line += 1;
332 current_new_line += 1;
333 } else if (line[0] == '+') {
334 deferred_new_add(line, current_new_line);
335 current_new_line += 1;
336 } else if (line[0] == '-') {
337 deferred_old_add(line, current_old_line);
338 current_old_line += 1;
339 } else if (line[0] == '@') {
340 html("<tr><td colspan='4' class='hunk'>");
341 html_txt(line);
342 html("</td></tr>");
343 } else {
344 html("<tr><td colspan='4' class='ctx'>");
345 html_txt(line);
346 html("</td></tr>");
347 }
348 line[len - 1] = c;
349}
350
351void cgit_ssdiff_header_begin()
352{
353 current_old_line = -1;
354 current_new_line = -1;
355 html("<tr><td class='space' colspan='4'><div></div></td></tr>");
356 html("<tr><td class='head' colspan='4'>");
357}
358
359void cgit_ssdiff_header_end()
360{
361 html("</td><tr>");
362}
363
364void cgit_ssdiff_footer()
365{
366 if (deferred_old || deferred_new)
367 cgit_ssdiff_print_deferred_lines();
368 html("<tr><td class='foot' colspan='4'></td></tr>");
369}
diff --git a/ui-ssdiff.h b/ui-ssdiff.h
new file mode 100644
index 0000000..64b4b12
--- a/dev/null
+++ b/ui-ssdiff.h
@@ -0,0 +1,13 @@
1#ifndef UI_SSDIFF_H
2#define UI_SSDIFF_H
3
4extern void cgit_ssdiff_print_deferred_lines();
5
6extern void cgit_ssdiff_line_cb(char *line, int len);
7
8extern void cgit_ssdiff_header_begin();
9extern void cgit_ssdiff_header_end();
10
11extern void cgit_ssdiff_footer();
12
13#endif /* UI_SSDIFF_H */