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authorJohn Keeping <john@keeping.me.uk>2014-01-12 17:13:50 +0000
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-12 20:20:20 +0100
commit3d8a6507ca542881a5e8b30ad6b7068a9c4fdeea (patch)
treef95c74d3317546606d72b74db3082769515c5e33
parentda218fcd9eb554a8405ca72e84bcc0feb371194f (diff)
downloadcgit-3d8a6507ca542881a5e8b30ad6b7068a9c4fdeea.tar.gz
cgit-3d8a6507ca542881a5e8b30ad6b7068a9c4fdeea.tar.bz2
filter: pass extra arguments via cgit_open_filter
This avoids poking into the filter data structure at various points in the code. We rely on the fact that the number of arguments is fixed based on the filter type (set in cgit_new_filter) and that the call sites all know which filter type they're using. Signed-off-by: John Keeping <john@keeping.me.uk>
-rw-r--r--cgit.h3
-rw-r--r--filter.c35
-rw-r--r--ui-repolist.c10
-rw-r--r--ui-summary.c13
-rw-r--r--ui-tree.c7
5 files changed, 38 insertions, 30 deletions
diff --git a/cgit.h b/cgit.h
index a72c503..e6e7715 100644
--- a/cgit.h
+++ b/cgit.h
@@ -59,6 +59,7 @@ typedef enum {
struct cgit_filter {
char *cmd;
char **argv;
+ int extra_args;
int old_stdout;
int pipe_fh[2];
int pid;
@@ -342,7 +343,7 @@ extern const char *cgit_repobasename(const char *reponame);
extern int cgit_parse_snapshots_mask(const char *str);
-extern int cgit_open_filter(struct cgit_filter *filter);
+extern int cgit_open_filter(struct cgit_filter *filter, ...);
extern int cgit_close_filter(struct cgit_filter *filter);
extern struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype);
diff --git a/filter.c b/filter.c
index f4ee9ac..d8c0116 100644
--- a/filter.c
+++ b/filter.c
@@ -13,8 +13,16 @@
#include <string.h>
#include <stdlib.h>
-int cgit_open_filter(struct cgit_filter *filter)
+int cgit_open_filter(struct cgit_filter *filter, ...)
{
+ int i;
+ va_list ap;
+
+ va_start(ap, filter);
+ for (i = 0; i < filter->extra_args; i++)
+ filter->argv[i+1] = va_arg(ap, char *);
+ va_end(ap);
+
filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
"Unable to duplicate STDOUT");
chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
@@ -36,45 +44,50 @@ int cgit_open_filter(struct cgit_filter *filter)
int cgit_close_filter(struct cgit_filter *filter)
{
- int exit_status;
+ int i, exit_status;
chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
"Unable to restore STDOUT");
close(filter->old_stdout);
if (filter->pid < 0)
- return 0;
+ goto done;
waitpid(filter->pid, &exit_status, 0);
if (WIFEXITED(exit_status) && !WEXITSTATUS(exit_status))
- return 0;
+ goto done;
die("Subprocess %s exited abnormally", filter->cmd);
+
+done:
+ for (i = 0; i < filter->extra_args; i++)
+ filter->argv[i+1] = NULL;
+ return 0;
+
}
struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
{
struct cgit_filter *f;
int args_size = 0;
- int extra_args;
if (!cmd || !cmd[0])
return NULL;
+ f = xmalloc(sizeof(struct cgit_filter));
+ memset(f, 0, sizeof(struct cgit_filter));
+
switch (filtertype) {
case SOURCE:
case ABOUT:
- extra_args = 1;
+ f->extra_args = 1;
break;
case COMMIT:
default:
- extra_args = 0;
+ f->extra_args = 0;
break;
}
-
- f = xmalloc(sizeof(struct cgit_filter));
- memset(f, 0, sizeof(struct cgit_filter));
f->cmd = xstrdup(cmd);
- args_size = (2 + extra_args) * sizeof(char *);
+ args_size = (2 + f->extra_args) * sizeof(char *);
f->argv = xmalloc(args_size);
memset(f->argv, 0, args_size);
f->argv[0] = f->cmd;
diff --git a/ui-repolist.c b/ui-repolist.c
index d4ee279..f622a01 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -331,13 +331,9 @@ void cgit_print_site_readme()
{
if (!ctx.cfg.root_readme)
return;
- if (ctx.cfg.about_filter) {
- ctx.cfg.about_filter->argv[1] = ctx.cfg.root_readme;
- cgit_open_filter(ctx.cfg.about_filter);
- }
+ if (ctx.cfg.about_filter)
+ cgit_open_filter(ctx.cfg.about_filter, ctx.cfg.root_readme);
html_include(ctx.cfg.root_readme);
- if (ctx.cfg.about_filter) {
+ if (ctx.cfg.about_filter)
cgit_close_filter(ctx.cfg.about_filter);
- ctx.cfg.about_filter->argv[1] = NULL;
- }
}
diff --git a/ui-summary.c b/ui-summary.c
index 63a5a75..725f3ab 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -151,18 +151,17 @@ void cgit_print_repo_readme(char *path)
* filesystem, while applying the about-filter.
*/
html("<div id='summary'>");
- if (ctx.repo->about_filter) {
- ctx.repo->about_filter->argv[1] = filename;
- cgit_open_filter(ctx.repo->about_filter);
- }
+ if (ctx.repo->about_filter)
+ cgit_open_filter(ctx.repo->about_filter, filename);
+
if (ref)
cgit_print_file(filename, ref, 1);
else
html_include(filename);
- if (ctx.repo->about_filter) {
+
+ if (ctx.repo->about_filter)
cgit_close_filter(ctx.repo->about_filter);
- ctx.repo->about_filter->argv[1] = NULL;
- }
+
html("</div>");
if (free_filename)
free(filename);
diff --git a/ui-tree.c b/ui-tree.c
index 5ae3926..e4c3d22 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -45,13 +45,12 @@ static void print_text_buffer(const char *name, char *buf, unsigned long size)
}
if (ctx.repo->source_filter) {
+ char *filter_arg = xstrdup(name);
html("<td class='lines'><pre><code>");
- ctx.repo->source_filter->argv[1] = xstrdup(name);
- cgit_open_filter(ctx.repo->source_filter);
+ cgit_open_filter(ctx.repo->source_filter, filter_arg);
html_raw(buf, size);
cgit_close_filter(ctx.repo->source_filter);
- free(ctx.repo->source_filter->argv[1]);
- ctx.repo->source_filter->argv[1] = NULL;
+ free(filter_arg);
html("</code></pre></td></tr></table>\n");
return;
}