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-rw-r--r--cgit.h8
-rw-r--r--filter.c66
-rw-r--r--ui-snapshot.c11
3 files changed, 63 insertions, 22 deletions
diff --git a/cgit.h b/cgit.h
index 9b4be26..92e8c55 100644
--- a/cgit.h
+++ b/cgit.h
@@ -57,6 +57,13 @@ typedef enum {
} filter_type;
struct cgit_filter {
+ int (*open)(struct cgit_filter *, va_list ap);
+ int (*close)(struct cgit_filter *);
+ void (*fprintf)(struct cgit_filter *, FILE *, const char *prefix);
+};
+
+struct cgit_exec_filter {
+ struct cgit_filter base;
char *cmd;
char **argv;
int extra_args;
@@ -346,6 +353,7 @@ extern int cgit_parse_snapshots_mask(const char *str);
extern int cgit_open_filter(struct cgit_filter *filter, ...);
extern int cgit_close_filter(struct cgit_filter *filter);
extern void cgit_fprintf_filter(struct cgit_filter *filter, FILE *f, const char *prefix);
+extern void cgit_exec_filter_init(struct cgit_exec_filter *filter, char *cmd, char **argv);
extern struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype);
extern void cgit_prepare_repo_env(struct cgit_repo * repo);
diff --git a/filter.c b/filter.c
index 80cf689..0f3edb0 100644
--- a/filter.c
+++ b/filter.c
@@ -13,15 +13,13 @@
#include <string.h>
#include <stdlib.h>
-int cgit_open_filter(struct cgit_filter *filter, ...)
+static int open_exec_filter(struct cgit_filter *base, va_list ap)
{
+ struct cgit_exec_filter *filter = (struct cgit_exec_filter *) base;
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");
@@ -41,9 +39,9 @@ int cgit_open_filter(struct cgit_filter *filter, ...)
return 0;
}
-
-int cgit_close_filter(struct cgit_filter *filter)
+static int close_exec_filter(struct cgit_filter *base)
{
+ struct cgit_exec_filter *filter = (struct cgit_exec_filter *) base;
int i, exit_status;
chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
@@ -63,21 +61,50 @@ done:
}
-void cgit_fprintf_filter(struct cgit_filter *filter, FILE *f, const char *prefix)
+static void fprintf_exec_filter(struct cgit_filter *base, FILE *f, const char *prefix)
{
+ struct cgit_exec_filter *filter = (struct cgit_exec_filter *) base;
fprintf(f, "%s%s\n", prefix, filter->cmd);
}
-struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
+int cgit_open_filter(struct cgit_filter *filter, ...)
{
- struct cgit_filter *f;
- int args_size = 0;
+ int result;
+ va_list ap;
+ va_start(ap, filter);
+ result = filter->open(filter, ap);
+ va_end(ap);
+ return result;
+}
- if (!cmd || !cmd[0])
- return NULL;
+int cgit_close_filter(struct cgit_filter *filter)
+{
+ return filter->close(filter);
+}
+
+void cgit_fprintf_filter(struct cgit_filter *filter, FILE *f, const char *prefix)
+{
+ filter->fprintf(filter, f, prefix);
+}
+
+void cgit_exec_filter_init(struct cgit_exec_filter *filter, char *cmd, char **argv)
+{
+ memset(filter, 0, sizeof(*filter));
+ filter->base.open = open_exec_filter;
+ filter->base.close = close_exec_filter;
+ filter->base.fprintf = fprintf_exec_filter;
+ filter->cmd = cmd;
+ filter->argv = argv;
+}
+
+static struct cgit_filter *new_exec_filter(const char *cmd, filter_type filtertype)
+{
+ struct cgit_exec_filter *f;
+ int args_size = 0;
- f = xmalloc(sizeof(struct cgit_filter));
- memset(f, 0, sizeof(struct cgit_filter));
+ f = xmalloc(sizeof(*f));
+ /* We leave argv for now and assign it below. */
+ cgit_exec_filter_init(f, xstrdup(cmd), NULL);
switch (filtertype) {
case SOURCE:
@@ -91,10 +118,17 @@ struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
break;
}
- f->cmd = xstrdup(cmd);
args_size = (2 + f->extra_args) * sizeof(char *);
f->argv = xmalloc(args_size);
memset(f->argv, 0, args_size);
f->argv[0] = f->cmd;
- return f;
+ return &f->base;
+}
+
+struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
+{
+ if (!cmd || !cmd[0])
+ return NULL;
+
+ return new_exec_filter(cmd, filtertype);
}
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 5136c49..7115ec4 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -58,13 +58,12 @@ static int write_compressed_tar_archive(const char *hex,
char *filter_argv[])
{
int rv;
- struct cgit_filter f = {
- .cmd = filter_argv[0],
- .argv = filter_argv,
- };
- cgit_open_filter(&f);
+ struct cgit_exec_filter f;
+ cgit_exec_filter_init(&f, filter_argv[0], filter_argv);
+
+ cgit_open_filter(&f.base);
rv = write_tar_archive(hex, prefix);
- cgit_close_filter(&f);
+ cgit_close_filter(&f.base);
return rv;
}