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path: root/filters/syntax-highlighting.py
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#!/usr/bin/env python2

# This script uses Pygments and Python2. You must have both installed
# for this to work.
#
# http://pygments.org/
# http://python.org/
#
# It may be used with the source-filter or repo.source-filter settings
# in cgitrc.
#
# The following environment variables can be used to retrieve the
# configuration of the repository for which this script is called:
# CGIT_REPO_URL        ( = repo.url       setting )
# CGIT_REPO_NAME       ( = repo.name      setting )
# CGIT_REPO_PATH       ( = repo.path      setting )
# CGIT_REPO_OWNER      ( = repo.owner     setting )
# CGIT_REPO_DEFBRANCH  ( = repo.defbranch setting )
# CGIT_REPO_SECTION    ( = section        setting )
# CGIT_REPO_CLONE_URL  ( = repo.clone-url setting )


import sys
from pygments import highlight
from pygments.util import ClassNotFound
from pygments.lexers import TextLexer
from pygments.lexers import guess_lexer
from pygments.lexers import guess_lexer_for_filename
from pygments.formatters import HtmlFormatter


# read stdin and decode to utf-8. ignore any unkown signs.
data = sys.stdin.read().decode(encoding='utf-8', errors='ignore')
filename = sys.argv[1]
formatter = HtmlFormatter(encoding='utf-8', style='pastie')

try:
	lexer = guess_lexer_for_filename(filename, data, encoding='utf-8')
except ClassNotFound:
	# check if there is any shebang
	if data[0:2] == '#!':
		lexer = guess_lexer(data, encoding='utf-8')
	else:
		lexer = TextLexer(encoding='utf-8')
except TypeError:
	lexer = TextLexer(encoding='utf-8')

# highlight! :-)
# printout pygments' css definitions as well
sys.stdout.write('<style>')
sys.stdout.write(formatter.get_style_defs('.highlight'))
sys.stdout.write('</style>')
highlight(data, lexer, formatter, outfile=sys.stdout)
ss="p">); 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); 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; } 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 { const char *suffix; const char *mimetype; write_archive_fn_t write_func; int bit; } snapshot_archives[] = { { ".zip", "application/x-zip", write_zip_archive, 0x1 }, { ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 }, { ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 }, { ".tar", "application/x-tar", write_tar_archive, 0x8 } }; #define snapshot_archives_len (sizeof(snapshot_archives) / sizeof(*snapshot_archives)) void cgit_print_snapshot(struct cacheitem *item, const char *head, const char *hex, const char *prefix, const char *filename, int snapshots) { const struct snapshot_archive_t* sat; struct archiver_args args; struct commit *commit; unsigned char sha1[20]; int f, sl, fnl = strlen(filename); for(f=0; f<snapshot_archives_len; f++) { sat = &snapshot_archives[f]; if(!(snapshots & sat->bit)) continue; sl = strlen(sat->suffix); if(fnl<sl || strcmp(&filename[fnl-sl],sat->suffix)) continue; if (!hex) hex = head; if(get_sha1(hex, sha1)) { cgit_print_error(fmt("Bad object id: %s", hex)); return; } commit = lookup_commit_reference(sha1); if(!commit) { cgit_print_error(fmt("Not a commit reference: %s", hex)); return;; } memset(&args,0,sizeof(args)); args.base = fmt("%s/", prefix); args.tree = commit->tree; args.time = commit->date; cgit_print_snapshot_start(sat->mimetype, filename, item); (*sat->write_func)(&args); return; } cgit_print_error(fmt("Unsupported snapshot format: %s", filename)); } void cgit_print_snapshot_links(const char *repo, const char *head, const char *hex, int snapshots) { const struct snapshot_archive_t* sat; char *filename; int f; for(f=0; f<snapshot_archives_len; f++) { sat = &snapshot_archives[f]; if(!(snapshots & sat->bit)) continue; filename = fmt("%s-%s%s", cgit_repobasename(repo), hex, sat->suffix); cgit_snapshot_link(filename, NULL, NULL, (char *)head, (char *)hex, filename); html("<br/>"); } } int cgit_parse_snapshots_mask(const char *str) { const struct snapshot_archive_t* sat; static const char *delim = " \t,:/|;"; int f, tl, sl, rv = 0; /* favor legacy setting */ if(atoi(str)) return 1; for(;;) { str += strspn(str,delim); tl = strcspn(str,delim); if(!tl) break; for(f=0; f<snapshot_archives_len; f++) { sat = &snapshot_archives[f]; sl = strlen(sat->suffix); if((tl == sl && !strncmp(sat->suffix, str, tl)) || (tl == sl-1 && !strncmp(sat->suffix+1, str, tl-1))) { rv |= sat->bit; break; } } str += tl; } return rv; } /* vim:set sw=8: */