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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
>ctx.qry.repo = ctx.repo->url; p = strchr(cmd + 1, '/'); if (p) { p[0] = '\0'; if (p[1]) ctx.qry.path = trim_end(p + 1, '/'); } if (cmd[1]) ctx.qry.page = xstrdup(cmd + 1); return; } } char *substr(const char *head, const char *tail) { char *buf; buf = xmalloc(tail - head + 1); strncpy(buf, head, tail - head); buf[tail - head] = '\0'; return buf; } char *parse_user(char *t, char **name, char **email, unsigned long *date) { char *p = t; int mode = 1; while (p && *p) { if (mode == 1 && *p == '<') { *name = substr(t, p - 1); t = p; mode++; } else if (mode == 1 && *p == '\n') { *name = substr(t, p); p++; break; } else if (mode == 2 && *p == '>') { *email = substr(t, p + 1); t = p; mode++; } else if (mode == 2 && *p == '\n') { *email = substr(t, p); p++; break; } else if (mode == 3 && isdigit(*p)) { *date = atol(p); mode++; } else if (*p == '\n') { p++; break; } p++; } return p; } #ifdef NO_ICONV #define reencode(a, b, c) #else const char *reencode(char **txt, const char *src_enc, const char *dst_enc) { char *tmp; if (!txt || !*txt || !src_enc || !dst_enc) return *txt; tmp = reencode_string(*txt, src_enc, dst_enc); if (tmp) { free(*txt); *txt = tmp; } return *txt; } #endif struct commitinfo *cgit_parse_commit(struct commit *commit) { struct commitinfo *ret; char *p = commit->buffer, *t = commit->buffer; ret = xmalloc(sizeof(*ret)); ret->commit = commit; ret->author = NULL; ret->author_email = NULL; ret->committer = NULL; ret->committer_email = NULL; ret->subject = NULL; ret->msg = NULL; ret->msg_encoding = NULL; if (p == NULL) return ret; if (strncmp(p, "tree ", 5)) die("Bad commit: %s", sha1_to_hex(commit->object.sha1)); else p += 46; // "tree " + hex[40] + "\n" while (!strncmp(p, "parent ", 7)) p += 48; // "parent " + hex[40] + "\n" if (p && !strncmp(p, "author ", 7)) { p = parse_user(p + 7, &ret->author, &ret->author_email, &ret->author_date); } if (p && !strncmp(p, "committer ", 9)) { p = parse_user(p + 9, &ret->committer, &ret->committer_email, &ret->committer_date); } if (p && !strncmp(p, "encoding ", 9)) { p += 9; t = strchr(p, '\n'); if (t) { ret->msg_encoding = substr(p, t + 1); p = t + 1; } } // skip unknown header fields while (p && *p && (*p != '\n')) { p = strchr(p, '\n'); if (p) p++; } // skip empty lines between headers and message while (p && *p == '\n') p++; if (!p) return ret; t = strchr(p, '\n'); if (t) { ret->subject = substr(p, t); p = t + 1; while (p && *p == '\n') { p = strchr(p, '\n'); if (p) p++; } if (p) ret->msg = xstrdup(p); } else ret->subject = xstrdup(p); if (ret->msg_encoding) { reencode(&ret->subject, PAGE_ENCODING, ret->msg_encoding); reencode(&ret->msg, PAGE_ENCODING, ret->msg_encoding); } return ret; } struct taginfo *cgit_parse_tag(struct tag *tag) { void *data; enum object_type type; unsigned long size; char *p; struct taginfo *ret; data = read_sha1_file(tag->object.sha1, &type, &size); if (!data || type != OBJ_TAG) { free(data); return 0; } ret = xmalloc(sizeof(*ret)); ret->tagger = NULL; ret->tagger_email = NULL; ret->tagger_date = 0; ret->msg = NULL; p = data; while (p && *p) { if (*p == '\n') break; if (!strncmp(p, "tagger ", 7)) { p = parse_user(p + 7, &ret->tagger, &ret->tagger_email, &ret->tagger_date); } else { p = strchr(p, '\n'); if (p) p++; } } // skip empty lines between headers and message while (p && *p == '\n') p++; if (p && *p) ret->msg = xstrdup(p); free(data); return ret; }