Merge branch 'jh/context-lines'

Conflicts:
	cgit.c
	cgit.h

7 files changed, 34 insertions, 8 deletions

diff --git a/cgit.c b/cgit.c
index d4fcfa7..ab25b6a 100644
--- a/cgit.c
+++ b/cgit.c
@@ -245,32 +245,34 @@ static void querystring_cb(const char *name, const char *value)
 	} else if (!strcmp(name, "path")) {
 		ctx.qry.path = trim_end(value, '/');
 	} else if (!strcmp(name, "name")) {
 		ctx.qry.name = xstrdup(value);
 	} else if (!strcmp(name, "mimetype")) {
 		ctx.qry.mimetype = xstrdup(value);
 	} else if (!strcmp(name, "s")){
 		ctx.qry.sort = xstrdup(value);
 	} else if (!strcmp(name, "showmsg")) {
 		ctx.qry.showmsg = atoi(value);
 	} else if (!strcmp(name, "period")) {
 		ctx.qry.period = xstrdup(value);
 	} else if (!strcmp(name, "ss")) {
 		ctx.qry.ssdiff = atoi(value);
 	} else if (!strcmp(name, "all")) {
 		ctx.qry.show_all = atoi(value);
+	} else if (!strcmp(name, "context")) {
+		ctx.qry.context = atoi(value);
 	}
 }
 
 char *xstrdupn(const char *str)
 {
 	return (str ? xstrdup(str) : NULL);
 }
 
 static void prepare_context(struct cgit_context *ctx)
 {
 	memset(ctx, 0, sizeof(*ctx));
 	ctx->cfg.agefile = "info/web/last-modified";
 	ctx->cfg.nocache = 0;
 	ctx->cfg.cache_size = 0;
 	ctx->cfg.cache_dynamic_ttl = 5;
 	ctx->cfg.cache_max_create_time = 5;
diff --git a/cgit.h b/cgit.h
index 80c3902..2b28d63 100644
--- a/cgit.h
+++ b/cgit.h
@@ -134,32 +134,33 @@ struct cgit_query {
 	char *search;
 	char *grep;
 	char *head;
 	char *sha1;
 	char *sha2;
 	char *path;
 	char *name;
 	char *mimetype;
 	char *url;
 	char *period;
 	int   ofs;
 	int nohead;
 	char *sort;
 	int showmsg;
 	int ssdiff;
 	int show_all;
+	int context;
 	char *vpath;
 };
 
 struct cgit_config {
 	char *agefile;
 	char *cache_root;
 	char *clone_prefix;
 	char *css;
 	char *favicon;
 	char *footer;
 	char *head_include;
 	char *header;
 	char *index_header;
 	char *index_info;
 	char *logo;
 	char *logo_link;
@@ -265,33 +266,33 @@ extern int chk_zero(int result, char *msg);
 extern int chk_positive(int result, char *msg);
 extern int chk_non_negative(int result, char *msg);
 
 extern char *trim_end(const char *str, char c);
 extern char *strlpart(char *txt, int maxlen);
 extern char *strrpart(char *txt, int maxlen);
 
 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
 extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
 			int flags, void *cb_data);
 
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
 extern int cgit_diff_files(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   unsigned long *old_size, unsigned long *new_size,
-			   int *binary, linediff_fn fn);
+			   int *binary, int context, linediff_fn fn);
 
 extern void cgit_diff_tree(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   filepair_fn fn, const char *prefix);
 
 extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
 
 extern char *fmt(const char *format,...);
 
 extern struct commitinfo *cgit_parse_commit(struct commit *commit);
 extern struct taginfo *cgit_parse_tag(struct tag *tag);
 extern void cgit_parse_url(const char *url);
 
 extern const char *cgit_repobasename(const char *reponame);
 
 extern int cgit_parse_snapshots_mask(const char *str);
diff --git a/shared.c b/shared.c
index 58837dc..06f70bb 100644
--- a/shared.c
+++ b/shared.c
@@ -250,60 +250,61 @@ int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 		((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
 		free(diffbuf);
 		diffbuf = NULL;
 		buflen = 0;
 	}
 	if (diffbuf) {
 		((linediff_fn)priv)(diffbuf, buflen);
 		free(diffbuf);
 		diffbuf = NULL;
 		buflen = 0;
 	}
 	return 0;
 }
 
 int cgit_diff_files(const unsigned char *old_sha1,
 		    const unsigned char *new_sha1, unsigned long *old_size,
-		    unsigned long *new_size, int *binary, linediff_fn fn)
+		    unsigned long *new_size, int *binary, int context,
+		    linediff_fn fn)
 {
 	mmfile_t file1, file2;
 	xpparam_t diff_params;
 	xdemitconf_t emit_params;
 	xdemitcb_t emit_cb;
 
 	if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
 		return 1;
 
 	*old_size = file1.size;
 	*new_size = file2.size;
 
 	if ((file1.ptr && buffer_is_binary(file1.ptr, file1.size)) ||
 	    (file2.ptr && buffer_is_binary(file2.ptr, file2.size))) {
 		*binary = 1;
 		if (file1.size)
 			free(file1.ptr);
 		if (file2.size)
 			free(file2.ptr);
 		return 0;
 	}
 
 	memset(&diff_params, 0, sizeof(diff_params));
 	memset(&emit_params, 0, sizeof(emit_params));
 	memset(&emit_cb, 0, sizeof(emit_cb));
 	diff_params.flags = XDF_NEED_MINIMAL;
-	emit_params.ctxlen = 3;
+	emit_params.ctxlen = context > 0 ? context : 3;
 	emit_params.flags = XDL_EMIT_FUNCNAMES;
 	emit_cb.outf = filediff_cb;
 	emit_cb.priv = fn;
 	xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
 	if (file1.size)
 		free(file1.ptr);
 	if (file2.size)
 		free(file2.ptr);
 	return 0;
 }
 
 void cgit_diff_tree(const unsigned char *old_sha1,
 		    const unsigned char *new_sha1,
 		    filepair_fn fn, const char *prefix)
 {
 	struct diff_options opt;
diff --git a/ui-diff.c b/ui-diff.c
index fb836df..e0a72f7 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -114,68 +114,76 @@ static void count_diff_lines(char *line, int len)
 		if (line[0] == '+')
 			lines_added++;
 		else if (line[0] == '-')
 			lines_removed++;
 	}
 }
 
 static void inspect_filepair(struct diff_filepair *pair)
 {
 	int binary = 0;
 	unsigned long old_size = 0;
 	unsigned long new_size = 0;
 	files++;
 	lines_added = 0;
 	lines_removed = 0;
 	cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size, &new_size,
-			&binary, count_diff_lines);
+			&binary, 0, count_diff_lines);
 	if (files >= slots) {
 		if (slots == 0)
 			slots = 4;
 		else
 			slots = slots * 2;
 		items = xrealloc(items, slots * sizeof(struct fileinfo));
 	}
 	items[files-1].status = pair->status;
 	hashcpy(items[files-1].old_sha1, pair->one->sha1);
 	hashcpy(items[files-1].new_sha1, pair->two->sha1);
 	items[files-1].old_mode = pair->one->mode;
 	items[files-1].new_mode = pair->two->mode;
 	items[files-1].old_path = xstrdup(pair->one->path);
 	items[files-1].new_path = xstrdup(pair->two->path);
 	items[files-1].added = lines_added;
 	items[files-1].removed = lines_removed;
 	items[files-1].old_size = old_size;
 	items[files-1].new_size = new_size;
 	items[files-1].binary = binary;
 	if (lines_added + lines_removed > max_changes)
 		max_changes = lines_added + lines_removed;
 	total_adds += lines_added;
 	total_rems += lines_removed;
 }
 
 void cgit_print_diffstat(const unsigned char *old_sha1,
 			 const unsigned char *new_sha1, const char *prefix)
 {
-	int i;
+	int i, save_context = ctx.qry.context;
 
 	html("<div class='diffstat-header'>");
 	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 		       ctx.qry.sha2, NULL, 0);
 	if (prefix)
 		htmlf(" (limited to '%s')", prefix);
+	html(" (");
+	ctx.qry.context = (save_context > 0 ? save_context : 3) << 1;
+	cgit_self_link("more", NULL, NULL, &ctx);
+	html("/");
+	ctx.qry.context = (save_context > 3 ? save_context : 3) >> 1;
+	cgit_self_link("less", NULL, NULL, &ctx);
+	ctx.qry.context = save_context;
+	html(" context)");
 	html("</div>");
 	html("<table summary='diffstat' class='diffstat'>");
 	max_changes = 0;
 	cgit_diff_tree(old_sha1, new_sha1, inspect_filepair, prefix);
 	for(i = 0; i<files; i++)
 		print_fileinfo(&items[i]);
 	html("</table>");
 	html("<div class='diffstat-summary'>");
 	htmlf("%d files changed, %d insertions, %d deletions",
 	      files, total_adds, total_rems);
 	html("</div>");
 }
 
 
 /*
  * print a single line returned from xdiff
@@ -275,33 +283,33 @@ static void filepair_cb(struct diff_filepair *pair)
 		print_line_fn = cgit_ssdiff_line_cb;
 	}
 	header(pair->one->sha1, pair->one->path, pair->one->mode,
 	       pair->two->sha1, pair->two->path, pair->two->mode);
 	if (use_ssdiff)
 		cgit_ssdiff_header_end();
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
 			print_line_fn(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
 		if (S_ISGITLINK(pair->two->mode))
 			print_line_fn(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		if (use_ssdiff)
 			cgit_ssdiff_footer();
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-			    &new_size, &binary, print_line_fn))
+			    &new_size, &binary, ctx.qry.context, print_line_fn))
 		cgit_print_error("Error running diff");
 	if (binary) {
 		if (use_ssdiff)
 			html("<tr><td colspan='4'>Binary files differ</td></tr>");
 		else
 			html("Binary files differ");
 	}
 	if (use_ssdiff)
 		cgit_ssdiff_footer();
 }
 
 void cgit_print_diff(const char *new_rev, const char *old_rev, const char *prefix)
 {
 	enum object_type type;
 	unsigned long size;
 	struct commit *commit, *commit2;
diff --git a/ui-log.c b/ui-log.c
index bfbe436..5eb5c81 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -20,33 +20,33 @@ void count_lines(char *line, int size)
 	if (line[0] == '+')
 		add_lines++;
 
 	else if (line[0] == '-')
 		rem_lines++;
 }
 
 void inspect_files(struct diff_filepair *pair)
 {
 	unsigned long old_size = 0;
 	unsigned long new_size = 0;
 	int binary = 0;
 
 	files++;
 	if (ctx.repo->enable_log_linecount)
 		cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-				&new_size, &binary, count_lines);
+				&new_size, &binary, 0, count_lines);
 }
 
 void show_commit_decorations(struct commit *commit)
 {
 	struct name_decoration *deco;
 	static char buf[1024];
 
 	buf[sizeof(buf) - 1] = 0;
 	deco = lookup_decoration(&name_decoration, &commit->object);
 	while (deco) {
 		if (!prefixcmp(deco->name, "refs/heads/")) {
 			strncpy(buf, deco->name + 11, sizeof(buf) - 1);
 			cgit_log_link(buf, NULL, "branch-deco", buf, NULL,
 				      ctx.qry.vpath, 0, NULL, NULL,
 				      ctx.qry.showmsg);
 		}
diff --git a/ui-patch.c b/ui-patch.c
index 25dc9fe..d13104c 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -58,33 +58,33 @@ static void header(unsigned char *sha1, char *path1, int mode1,
 static void filepair_cb(struct diff_filepair *pair)
 {
 	unsigned long old_size = 0;
 	unsigned long new_size = 0;
 	int binary = 0;
 
 	header(pair->one->sha1, pair->one->path, pair->one->mode,
 	       pair->two->sha1, pair->two->path, pair->two->mode);
 	if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
 		if (S_ISGITLINK(pair->one->mode))
 			print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
 		if (S_ISGITLINK(pair->two->mode))
 			print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
 		return;
 	}
 	if (cgit_diff_files(pair->one->sha1, pair->two->sha1, &old_size,
-			    &new_size, &binary, print_line))
+			    &new_size, &binary, 0, print_line))
 		html("Error running diff");
 	if (binary)
 		html("Binary files differ\n");
 }
 
 void cgit_print_patch(char *hex, const char *prefix)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	unsigned char sha1[20], old_sha1[20];
 	char *patchname;
 
 	if (!hex)
 		hex = ctx.qry.head;
 
 	if (get_sha1(hex, sha1)) {
diff --git a/ui-shared.c b/ui-shared.c
index e991799..c99bcec 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -328,32 +328,39 @@ void cgit_commit_link(char *name, const char *title, const char *class,
 		name[ctx.cfg.max_msg_len - 2] = '.';
 		name[ctx.cfg.max_msg_len - 3] = '.';
 	}
 
 	char *delim;
 
 	delim = repolink(title, class, "commit", head, path);
 	if (rev && strcmp(rev, ctx.qry.head)) {
 		html(delim);
 		html("id=");
 		html_url_arg(rev);
 		delim = "&amp;";
 	}
 	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 		html(delim);
 		html("ss=1");
+		delim = "&amp;";
+	}
+	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
+		html(delim);
+		html("context=");
+		htmlf("%d", ctx.qry.context);
+		delim = "&amp;";
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_refs_link(const char *name, const char *title, const char *class,
 		    const char *head, const char *rev, const char *path)
 {
 	reporevlink("refs", name, title, class, head, rev, path);
 }
 
 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 			const char *head, const char *rev,
 			const char *archivename)
 {
@@ -369,32 +376,39 @@ void cgit_diff_link(const char *name, const char *title, const char *class,
 	delim = repolink(title, class, "diff", head, path);
 	if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 		html(delim);
 		html("id=");
 		html_url_arg(new_rev);
 		delim = "&amp;";
 	}
 	if (old_rev) {
 		html(delim);
 		html("id2=");
 		html_url_arg(old_rev);
 		delim = "&amp;";
 	}
 	if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 		html(delim);
 		html("ss=1");
+		delim = "&amp;";
+	}
+	if (ctx.qry.context > 0 && ctx.qry.context != 3) {
+		html(delim);
+		html("context=");
+		htmlf("%d", ctx.qry.context);
+		delim = "&amp;";
 	}
 	html("'>");
 	html_txt(name);
 	html("</a>");
 }
 
 void cgit_patch_link(const char *name, const char *title, const char *class,
 		     const char *head, const char *rev, const char *path)
 {
 	reporevlink("patch", name, title, class, head, rev, path);
 }
 
 void cgit_stats_link(const char *name, const char *title, const char *class,
 		     const char *head, const char *path)
 {
 	reporevlink("stats", name, title, class, head, NULL, path);