introduced .tar.bz2 snapshots

 - reworked write_tar_gzip_archive to handle arbitrary filter as a
   write_compressed_tar_archive
 - reformatted whitespaces in the said function to adhere to common cgit
   standards
 - added wrappers around write_compressed_tar_archive for .tar.gz and .tar.bz2
 - added a hint for vim to use 8 characters shift width by default

Signed-off-by: Michael Krelin <hacker@klever.net>

1 files changed, 42 insertions, 31 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 649569f..f623f35 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -8,40 +8,49 @@
 
 #include "cgit.h"
 
-static int write_tar_gzip_archive(struct archiver_args *args)
+static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
 {
-    int rw[2];
-    pid_t gzpid;
-    int stdout2;
-    int status;
-    int rv;
+        int rw[2];
+        pid_t gzpid;
+        int stdout2;
+        int status;
+        int rv;
+
+        stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
+        chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
+        gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
+        if(gzpid==0) {
+                /* child */
+                chk_zero(close(rw[1]), "Closing write end of pipe in child");
+                chk_zero(close(STDIN_FILENO), "Closing STDIN");
+                chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
+                execlp(filter,filter,NULL);
+                _exit(-1);
+        }
+        /* parent */
+        chk_zero(close(rw[0]), "Closing read end of pipe");
+        chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
+        
+        rv = write_tar_archive(args);
 
-    stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
-    chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
-    gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
-    if(gzpid==0) {
-            /* child */
-            chk_zero(close(rw[1]), "Closing write end of pipe in child");
-            chk_zero(close(STDIN_FILENO), "Closing STDIN");
-            chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
-            execlp("gzip","gzip",NULL);
-            _exit(-1);
-    }
-    /* parent */
-    chk_zero(close(rw[0]), "Closing read end of pipe");
-    chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
-    
-    rv = write_tar_archive(args);
+        chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
+        chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
+        chk_zero(close(stdout2), "Closing uncompressed STDOUT");
+        chk_zero(close(rw[1]), "Closing write end of pipe in parent");
+        chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
+        if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
+                cgit_print_error("Failed to compress archive");
 
-    chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
-    chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
-    chk_zero(close(stdout2), "Closing uncompressed STDOUT");
-    chk_zero(close(rw[1]), "Closing write end of pipe in parent");
-    chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
-    if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
-            cgit_print_error("Failed to compress archive");
+        return rv;
+}
 
-    return rv;
+static int write_tar_gzip_archive(struct archiver_args *args)
+{
+        return write_compressed_tar_archive(args,"gzip");
+}
+static int write_tar_bzip2_archive(struct archiver_args *args)
+{
+        return write_compressed_tar_archive(args,"bzip2");
 }
 
 static const struct snapshot_archive_t {
@@ -50,7 +59,8 @@ static const struct snapshot_archive_t {
         write_archive_fn_t write_func;
         }snapshot_archives[] = {
         { ".zip", "application/x-zip", write_zip_archive },
-        { ".tar.gz", "application/x-gzip", write_tar_gzip_archive }
+        { ".tar.gz", "application/x-tar", write_tar_gzip_archive },
+        { ".tar.bz2", "application/x-tar", write_tar_bzip2_archive }
 };
 
 void cgit_print_snapshot(struct cacheitem *item, const char *hex, 
@@ -102,3 +112,4 @@ void cgit_print_snapshot_links(const char *repo,const char *hex)
                             fmt("id=%s&name=%s",hex,filename)), filename);
         }
 }
+/* vim:set sw=8: */