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path: root/filters/syntax-highlighting.sh
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#!/bin/sh
# This script can be used to implement syntax highlighting in the cgit
# tree-view by refering to this file with the source-filter or repo.source-
# filter options in cgitrc.
#
# This script requires a shell supporting the ${var##pattern} syntax.
# It is supported by at least dash and bash, however busybox environments
# might have to use an external call to sed instead.
#
# Note: the highlight command (http://www.andre-simon.de/) uses css for syntax
# highlighting, so you'll probably want something like the following included
# in your css file:
#
# Style definition file generated by highlight 2.4.8, http://www.andre-simon.de/
#
# table.blob .num  { color:#2928ff; }
# table.blob .esc  { color:#ff00ff; }
# table.blob .str  { color:#ff0000; }
# table.blob .dstr { color:#818100; }
# table.blob .slc  { color:#838183; font-style:italic; }
# table.blob .com  { color:#838183; font-style:italic; }
# table.blob .dir  { color:#008200; }
# table.blob .sym  { color:#000000; }
# table.blob .kwa  { color:#000000; font-weight:bold; }
# table.blob .kwb  { color:#830000; }
# table.blob .kwc  { color:#000000; font-weight:bold; }
# table.blob .kwd  { color:#010181; }
#
#
# Style definition file generated by highlight 2.6.14, http://www.andre-simon.de/
#
# body.hl  { background-color:#ffffff; }
# pre.hl   { color:#000000; background-color:#ffffff; font-size:10pt; font-family:'Courier New';}
# .hl.num  { color:#2928ff; }
# .hl.esc  { color:#ff00ff; }
# .hl.str  { color:#ff0000; }
# .hl.dstr { color:#818100; }
# .hl.slc  { color:#838183; font-style:italic; }
# .hl.com  { color:#838183; font-style:italic; }
# .hl.dir  { color:#008200; }
# .hl.sym  { color:#000000; }
# .hl.line { color:#555555; }
# .hl.mark { background-color:#ffffbb;}
# .hl.kwa  { color:#000000; font-weight:bold; }
# .hl.kwb  { color:#830000; }
# .hl.kwc  { color:#000000; font-weight:bold; }
# .hl.kwd  { color:#010181; }
#
#
# Style definition file generated by highlight 3.8, http://www.andre-simon.de/
#
# body.hl { background-color:#e0eaee; }
# pre.hl  { color:#000000; background-color:#e0eaee; font-size:10pt; font-family:'Courier New';}
# .hl.num { color:#b07e00; }
# .hl.esc { color:#ff00ff; }
# .hl.str { color:#bf0303; }
# .hl.pps { color:#818100; }
# .hl.slc { color:#838183; font-style:italic; }
# .hl.com { color:#838183; font-style:italic; }
# .hl.ppc { color:#008200; }
# .hl.opt { color:#000000; }
# .hl.lin { color:#555555; }
# .hl.kwa { color:#000000; font-weight:bold; }
# .hl.kwb { color:#0057ae; }
# .hl.kwc { color:#000000; font-weight:bold; }
# .hl.kwd { color:#010181; }
#
#
# Style definition file generated by highlight 3.13, http://www.andre-simon.de/
#
# body.hl { background-color:#e0eaee; }
# pre.hl  { color:#000000; background-color:#e0eaee; font-size:10pt; font-family:'Courier New',monospace;}
# .hl.num { color:#b07e00; }
# .hl.esc { color:#ff00ff; }
# .hl.str { color:#bf0303; }
# .hl.pps { color:#818100; }
# .hl.slc { color:#838183; font-style:italic; }
# .hl.com { color:#838183; font-style:italic; }
# .hl.ppc { color:#008200; }
# .hl.opt { color:#000000; }
# .hl.ipl { color:#0057ae; }
# .hl.lin { color:#555555; }
# .hl.kwa { color:#000000; font-weight:bold; }
# .hl.kwb { color:#0057ae; }
# .hl.kwc { color:#000000; font-weight:bold; }
# .hl.kwd { color:#010181; }
#
#
# 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 )
#

# store filename and extension in local vars
BASENAME="$1"
EXTENSION="${BASENAME##*.}"

[ "${BASENAME}" = "${EXTENSION}" ] && EXTENSION=txt
[ -z "${EXTENSION}" ] && EXTENSION=txt

# map Makefile and Makefile.* to .mk
[ "${BASENAME%%.*}" = "Makefile" ] && EXTENSION=mk

# highlight versions 2 and 3 have different commandline options. Specifically,
# the -X option that is used for version 2 is replaced by the -O xhtml option
# for version 3.
#
# Version 2 can be found (for example) on EPEL 5, while version 3 can be
# found (for example) on EPEL 6.
#
# This is for version 2
exec highlight --force -f -I -X -S "$EXTENSION" 2>/dev/null

# This is for version 3
#exec highlight --force -f -I -O xhtml -S "$EXTENSION" 2>/dev/null
an class="w"> const struct cgit_snapshot_format *fmt; int fl, sl; fl = strlen(filename); for(fmt = cgit_snapshot_formats; fmt->suffix; fmt++) { sl = strlen(fmt->suffix); if (sl >= fl) continue; if (!strcmp(fmt->suffix, filename + fl - sl)) return fmt; } return NULL; } static int make_snapshot(const struct cgit_snapshot_format *format, const char *hex, const char *prefix, const char *filename) { struct archiver_args args; struct commit *commit; unsigned char sha1[20]; if(get_sha1(hex, sha1)) { cgit_print_error(fmt("Bad object id: %s", hex)); return 1; } commit = lookup_commit_reference(sha1); if(!commit) { cgit_print_error(fmt("Not a commit reference: %s", hex)); return 1; } memset(&args, 0, sizeof(args)); if (prefix) { args.base = fmt("%s/", prefix); args.baselen = strlen(prefix) + 1; } else { args.base = ""; args.baselen = 0; } args.tree = commit->tree; args.time = commit->date; ctx.page.mimetype = xstrdup(format->mimetype); ctx.page.filename = xstrdup(filename); cgit_print_http_headers(&ctx); format->write_func(&args); return 0; } /* Try to guess the requested revision from the requested snapshot name. * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become * "cgit-0.7.2". If this is a valid commit object name we've got a winner. * Otherwise, if the snapshot name has a prefix matching the result from * repo_basename(), we strip the basename and any following '-' and '_' * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once * more. If this still isn't a valid commit object name, we check if pre- * pending a 'v' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives * us something valid. */ static const char *get_ref_from_filename(const char *url, const char *filename, const struct cgit_snapshot_format *format) { const char *reponame; unsigned char sha1[20]; char *snapshot; snapshot = xstrdup(filename); snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0'; fprintf(stderr, "snapshot=%s\n", snapshot); if (get_sha1(snapshot, sha1) == 0) return snapshot; reponame = cgit_repobasename(url); fprintf(stderr, "reponame=%s\n", reponame); if (prefixcmp(snapshot, reponame) == 0) { snapshot += strlen(reponame); while (snapshot && (*snapshot == '-' || *snapshot == '_')) snapshot++; } if (get_sha1(snapshot, sha1) == 0) return snapshot; snapshot = fmt("v%s", snapshot); if (get_sha1(snapshot, sha1) == 0) return snapshot; return NULL; } void show_error(char *msg) { ctx.page.mimetype = "text/html"; cgit_print_http_headers(&ctx); cgit_print_docstart(&ctx); cgit_print_pageheader(&ctx); cgit_print_error(msg); cgit_print_docend(); } void cgit_print_snapshot(const char *head, const char *hex, const char *filename, int snapshots, int dwim) { const struct cgit_snapshot_format* f; char *prefix = NULL; if (!filename) { show_error("No snapshot name specified"); return; } f = get_format(filename); if (!f) { show_error(xstrdup(fmt("Unsupported snapshot format: %s", filename))); return; } if (!hex && dwim) { hex = get_ref_from_filename(ctx.repo->url, filename, f); if (hex == NULL) { html_status(404, "Not found", 0); return; } prefix = xstrdup(filename); prefix[strlen(filename) - strlen(f->suffix)] = '\0'; } if (!hex) hex = head; if (!prefix) prefix = xstrdup(cgit_repobasename(ctx.repo->url)); make_snapshot(f, hex, prefix, filename); free(prefix); }