From 1c1f2a00d290598f050cb77ad4c846902a135f5b Mon Sep 17 00:00:00 2001
From: lookshe <github@lookshe.org>
Date: Fri, 26 Feb 2016 10:35:57 +0100
Subject: implementation to link FS#[0-9]+ to flyspray (FS#141)

---
 cgit.c      |  1 +
 cgit.h      |  3 ++
 shared.c    |  8 ++++++
 ui-commit.c |  4 +--
 ui-log.c    |  4 +--
 ui-shared.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ui-shared.h |  8 ++++++
 7 files changed, 115 insertions(+), 4 deletions(-)

diff --git a/cgit.c b/cgit.c
index 4eaa7ab..62e5e28 100644
--- a/cgit.c
+++ b/cgit.c
@@ -392,6 +392,7 @@ static void prepare_context(void)
 	ctx.cfg.summary_tags = 10;
 	ctx.cfg.max_atom_items = 10;
 	ctx.cfg.difftype = DIFF_UNIFIED;
+	ctx.cfg.issue_link = "https://bugs.thedevstack.de/task/";
 	ctx.env.cgit_config = getenv("CGIT_CONFIG");
 	ctx.env.http_host = getenv("HTTP_HOST");
 	ctx.env.https = getenv("HTTPS");
diff --git a/cgit.h b/cgit.h
index de5c94a..567bfec 100644
--- a/cgit.h
+++ b/cgit.h
@@ -270,6 +270,7 @@ struct cgit_config {
 	struct cgit_filter *email_filter;
 	struct cgit_filter *owner_filter;
 	struct cgit_filter *auth_filter;
+	char* issue_link;
 };
 
 struct cgit_page {
@@ -394,4 +395,6 @@ extern char *expand_macros(const char *txt);
 
 extern char *get_mimetype_for_filename(const char *filename);
 
+extern char *sub_str(const char* text, int begin, int end);
+
 #endif /* CGIT_H */
diff --git a/shared.c b/shared.c
index a078a27..b65e801 100644
--- a/shared.c
+++ b/shared.c
@@ -600,3 +600,11 @@ char *get_mimetype_for_filename(const char *filename)
 	fclose(file);
 	return NULL;
 }
+
+char* sub_str(const char* text, int begin, int end)
+{
+	char* sub = (char*) malloc(sizeof(char) * ((end - begin) + 1));
+	strncpy(sub, text + begin, end - begin);
+	sub[end - begin] = '\0';
+	return sub;
+}
diff --git a/ui-commit.c b/ui-commit.c
index 0c3d740..d3f7922 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -115,13 +115,13 @@ void cgit_print_commit(char *hex, const char *prefix)
 	html("</table>\n");
 	html("<div class='commit-subject'>");
 	cgit_open_filter(ctx.repo->commit_filter);
-	html_txt(info->subject);
+	cgit_check_text_for_issue_link(info->subject);
 	cgit_close_filter(ctx.repo->commit_filter);
 	show_commit_decorations(commit);
 	html("</div>");
 	html("<div class='commit-msg'>");
 	cgit_open_filter(ctx.repo->commit_filter);
-	html_txt(info->msg);
+	cgit_check_text_for_issue_link(info->msg);
 	cgit_close_filter(ctx.repo->commit_filter);
 	html("</div>");
 	if (notes.len != 0) {
diff --git a/ui-log.c b/ui-log.c
index 19a9707..4cb93b3 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -234,8 +234,8 @@ static void print_commit(struct commit *commit, struct rev_info *revs)
 			strcpy(info->subject + i, wrap_symbol);
 		}
 	}
-	cgit_commit_link(info->subject, NULL, NULL, ctx.qry.head,
-			 oid_to_hex(&commit->object.oid), ctx.qry.vpath);
+	cgit_commit_link2(info->subject, NULL, NULL, ctx.qry.head,
+			 oid_to_hex(&commit->object.oid), ctx.qry.vpath, true);
 	show_commit_decorations(commit);
 	html("</td><td>");
 	cgit_open_filter(ctx.repo->email_filter, info->author_email, "log");
diff --git a/ui-shared.c b/ui-shared.c
index 15bcb3f..ea6d18b 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -356,7 +356,52 @@ 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] = '.';
 	}
+	cgit_commit_link2(name, title, class, head, rev, path, false);
+}
 
+void cgit_commit_link2(char *name, const char *title, const char *class,
+				const char *head, const char *rev, const char *path, bool checkForIssueLink)
+{
+	if (checkForIssueLink) {
+		int last_match = 0;
+		for (;;) {
+			const char* sub = strstr(name + last_match, "FS#");
+         if (sub != NULL) {
+				const char* sub = strstr(name + last_match, "FS#");
+				int found_pos = (sub - (name + last_match));
+				if (found_pos > 0) {
+					char* left_part = sub_str(name, last_match, last_match + found_pos);
+					cgit_commit_link3(left_part, title, class, head, rev, path);
+					free(left_part);
+				}
+				sub += 3;
+				int numbercount = 0;
+				while (*sub >= '0' && *sub <= '9') {
+					numbercount++;
+					sub++;
+				}
+				char* issue_part = sub_str(name, last_match + found_pos, last_match + found_pos + 3 + numbercount);
+            if (numbercount)
+   				cgit_issue_link(issue_part);
+            else
+               cgit_commit_link3(issue_part, title, class, head, rev, path);
+				free(issue_part);
+				last_match += found_pos + 3 + numbercount;
+			} else {
+				if (strlen(name + last_match)) {
+					cgit_commit_link3(name + last_match, title, class, head, rev, path);
+				}
+				break;
+			}
+		}
+	} else {
+		cgit_commit_link3(name, title, class, head, rev, path);
+	}
+}
+
+void cgit_commit_link3(char *name, const char *title, const char *class,
+		      const char *head, const char *rev, const char *path)
+{
 	char *delim;
 
 	delim = repolink(title, class, "commit", head, path);
@@ -1117,3 +1162,49 @@ extern void cgit_author_link(const char *author, const char *head)
 	html_txt(author);
 	html("</a>");
 }
+
+extern void cgit_check_text_for_issue_link(const char* text)
+{
+	int last_match = 0;
+	for (;;) {
+		const char* sub = strstr(text + last_match, "FS#");
+   	if(sub != NULL) {
+			int found_pos = (sub - (text + last_match));
+			if (found_pos > 0) {
+				char* left_part = sub_str(text, last_match, last_match + found_pos);
+				html_txt(left_part);
+				free(left_part);
+			}
+			sub += 3;
+			int numbercount = 0;
+			while (*sub >= '0' && *sub <= '9') {
+				numbercount++;
+				sub++;
+			}
+			char* issue_part = sub_str(text, last_match + found_pos, last_match + found_pos + 3 + numbercount);
+         if (numbercount)
+   			cgit_issue_link(issue_part);
+         else
+            html_txt(issue_part);
+			free(issue_part);
+			last_match += found_pos + 3 + numbercount;
+		} else {
+			if (strlen(text + last_match)) {
+				html_txt(text + last_match);
+			}
+			break;
+		}
+	}
+}
+
+extern void cgit_issue_link(const char* issue)
+{
+	html("<a href='");
+	htmlf(ctx.cfg.issue_link);
+	if (strlen(issue) > 3) {
+		htmlf(issue + 3);
+	}
+	html("' target='_blank'>");
+	html_txt(issue);
+	html("</a>");
+}
diff --git a/ui-shared.h b/ui-shared.h
index 369e33c..9b972b5 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -33,6 +33,12 @@ extern void cgit_log_link(const char *name, const char *title,
 extern void cgit_commit_link(char *name, const char *title,
 			     const char *class, const char *head,
 			     const char *rev, const char *path);
+extern void cgit_commit_link2(char *name, const char *title,
+			     const char *class, const char *head,
+			     const char *rev, const char *path, bool checkForIssueLink);
+extern void cgit_commit_link3(char *name, const char *title,
+			     const char *class, const char *head,
+			     const char *rev, const char *path);
 extern void cgit_patch_link(const char *name, const char *title,
 			    const char *class, const char *head,
 			    const char *rev, const char *path);
@@ -76,4 +82,6 @@ extern void cgit_print_snapshot_links(const char *repo, const char *head,
 extern void cgit_add_hidden_formfields(int incl_head, int incl_search,
 				       const char *page);
 extern void cgit_author_link(const char *author, const char *head);
+extern void cgit_check_text_for_issue_link(const char* text);
+extern void cgit_issue_link(const char* issue);
 #endif /* UI_SHARED_H */
-- 
cgit v1.2.3