#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");
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),
}
+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, "%sexec:%s\n", prefix, filter->cmd);
+}
+
+int cgit_open_filter(struct cgit_filter *filter, ...)
+{
+ int result;
+ va_list ap;
+ va_start(ap, filter);
+ result = filter->open(filter, ap);
+ va_end(ap);
+ return result;
+}
+
+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)
{
- fprintf(f, "%s%s\n", prefix, filter->cmd);
+ filter->fprintf(filter, f, prefix);
}
-struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
+void cgit_exec_filter_init(struct cgit_exec_filter *filter, char *cmd, char **argv)
{
- struct cgit_filter *f;
- int args_size = 0;
+ 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;
+}
- if (!cmd || !cmd[0])
- return NULL;
+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:
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;
+}
+
+static const struct {
+ const char *prefix;
+ struct cgit_filter *(*ctor)(const char *cmd, filter_type filtertype);
+} filter_specs[] = {
+ { "exec", new_exec_filter },
+};
+
+struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
+{
+ char *colon;
+ int i;
+ size_t len;
+ if (!cmd || !cmd[0])
+ return NULL;
+
+ colon = strchr(cmd, ':');
+ len = colon - cmd;
+ /*
+ * In case we're running on Windows, don't allow a single letter before
+ * the colon.
+ */
+ if (len == 1)
+ colon = NULL;
+
+ /* If no prefix is given, exec filter is the default. */
+ if (!colon)
+ return new_exec_filter(cmd, filtertype);
+
+ for (i = 0; i < ARRAY_SIZE(filter_specs); i++) {
+ if (len == strlen(filter_specs[i].prefix) &&
+ !strncmp(filter_specs[i].prefix, cmd, len))
+ return filter_specs[i].ctor(colon + 1, filtertype);
+ }
+
+ die("Invalid filter type: %.*s", (int) len, cmd);
}