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-rwxr-xr-xbin/contrib/md2html.awk427
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diff --git a/bin/contrib/md2html.awk b/bin/contrib/md2html.awk
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-#!/bin/awk -f
-#
-# by: Jesus Galan (yiyus) 2009
-#
-# Usage: md2html.awk file.md > file.html
-# See: http://4l77.com/src/md2html.awk
-
-function eschtml(t) {
- gsub("&", "\\&", t);
- gsub("<", "\\&lt;", t);
- return t;
-}
-
-function oprint(t){
- if(nr == 0)
- print t;
- else
- otext = otext "\n" t;
-}
-
-function subref(id){
- for(; nr > 0 && sub("<<" id, ref[id], otext); nr--);
- if(nr == 0 && otext) {
- print otext;
- otext = "";
- }
-}
-
-function nextil(t) {
- if(!match(t, /[`<&\[*_\\-]|(\!\[)/))
- return t;
- t1 = substr(t, 1, RSTART - 1);
- tag = substr(t, RSTART, RLENGTH);
- t2 = substr(t, RSTART + RLENGTH);
- if(ilcode && tag != "`")
- return eschtml(t1 tag) nextil(t2);
- # Backslash escaping
- if(tag == "\\"){
- if(match(t2, /^[\\`*_{}\[\]()#+\-\.!]/)){
- tag = substr(t2, 1, 1);
- t2 = substr(t2, 2);
- }
- return t1 tag nextil(t2);
- }
- # Dashes
- if(tag == "-"){
- if(sub(/^-/, "", t2))
- tag = "&#8212;";
- return t1 tag nextil(t2);
- }
- # Inline Code
- if(tag == "`"){
- if(sub(/^`/, "", t2)){
- if(!match(t2, /``/))
- return t1 "&#8221;" nextil(t2);
- ilcode2 = !ilcode2;
- }
- else if(ilcode2)
- return t1 tag nextil(t2);
- tag = "<code>";
- if(ilcode){
- t1 = eschtml(t1);
- tag = "</code>";
- }
- ilcode = !ilcode;
- return t1 tag nextil(t2);
- }
- if(tag == "<"){
- # Autolinks
- if(match(t2, /^[^ ]+[\.@][^ ]+>/)){
- url = eschtml(substr(t2, 1, RLENGTH - 1));
- t2 = substr(t2, RLENGTH + 1);
- linktext = url;
- if(match(url, /@/) && !match(url, /^mailto:/))
- url = "mailto:" url;
- return t1 "<a href=\"" url "\">" linktext "</a>" nextil(t2);
- }
- # Html tags
- if(match(t2, /^[A-Za-z\/!][^>]*>/)){
- tag = tag substr(t2, RSTART, RLENGTH);
- t2 = substr(t2, RLENGTH + 1);
- return t1 tag nextil(t2);
- }
- return t1 "&lt;" nextil(t2);
- }
- # Html special entities
- if(tag == "&"){
- if(match(t2, /^#?[A-Za-z0-9]+;/)){
- tag = tag substr(t2, RSTART, RLENGTH);
- t2 = substr(t2, RLENGTH + 1);
- return t1 tag nextil(t2);
- }
- return t1 "&amp;" nextil(t2);
- }
- # Images
- if(tag == "!["){
- if(!match(t2, /(\[.*\])|(\(.*\))/))
- return t1 tag nextil(t2);
- match(t2, /^[^\]]*/);
- alt = substr(t2, 1, RLENGTH);
- t2 = substr(t2, RLENGTH + 2);
- if(match(t2, /^\(/)){
- # Inline
- sub(/^\(/, "", t2);
- match(t2, /^[^\)]+/);
- url = eschtml(substr(t2, 1, RLENGTH));
- t2 = substr(t2, RLENGTH + 2);
- title = "";
- if(match(url, /[ ]+\".*\"[ ]*$/)) {
- title = substr(url, RSTART, RLENGTH);
- url = substr(url, 1, RSTART - 1);
- match(title, /\".*\"/);
- title = " title=\"" substr(title, RSTART + 1, RLENGTH - 2) "\"";
- }
- if(match(url, /^<.*>$/))
- url = substr(url, 2, RLENGTH - 2);
- return t1 "<img src=\"" url "\" alt=\"" alt "\"" title " />" nextil(t2);
- }
- else{
- # Referenced
- sub(/^ ?\[/, "", t2);
- id = alt;
- if(match(t2, /^[^\]]+/))
- id = substr(t2, 1, RLENGTH);
- t2 = substr(t2, RLENGTH + 2);
- if(ref[id])
- r = ref[id];
- else{
- r = "<<" id;
- nr++;
- }
- return t1 "<img src=\"" r "\" alt=\"" alt "\" />" nextil(t2);
- }
- }
- # Links
- if(tag == "["){
- if(!match(t2, /(\[.*\])|(\(.*\))/))
- return t1 tag nextil(t2);
- match(t2, /^[^\]]*(\[[^\]]*\][^\]]*)*/);
- linktext = substr(t2, 1, RLENGTH);
- t2 = substr(t2, RLENGTH + 2);
- if(match(t2, /^\(/)){
- # Inline
- match(t2, /^[^\)]+(\([^\)]+\)[^\)]*)*/);
- url = substr(t2, 2, RLENGTH - 1);
- pt2 = substr(t2, RLENGTH + 2);
- title = "";
- if(match(url, /[ ]+\".*\"[ ]*$/)) {
- title = substr(url, RSTART, RLENGTH);
- url = substr(url, 1, RSTART - 1);
- match(title, /\".*\"/);
- title = " title=\"" substr(title, RSTART + 1, RLENGTH - 2) "\"";
- }
- if(match(url, /^<.*>$/))
- url = substr(url, 2, RLENGTH - 2);
- url = eschtml(url);
- return t1 "<a href=\"" url "\"" title ">" nextil(linktext) "</a>" nextil(pt2);
- }
- else{
- # Referenced
- sub(/^ ?\[/, "", t2);
- id = linktext;
- if(match(t2, /^[^\]]+/))
- id = substr(t2, 1, RLENGTH);
- t2 = substr(t2, RLENGTH + 2);
- if(ref[id])
- r = ref[id];
- else{
- r = "<<" id;
- nr++;
- }
- pt2 = t2;
- return t1 "<a href=\"" r "\" />" nextil(linktext) "</a>" nextil(pt2);
- }
- }
- # Emphasis
- if(match(tag, /[*_]/)){
- ntag = tag;
- if(sub("^" tag, "", t2)){
- if(stag[ns] == tag && match(t2, "^" tag))
- t2 = tag t2;
- else
- ntag = tag tag
- }
- n = length(ntag);
- tag = (n == 2) ? "strong" : "em";
- if(match(t1, / $/) && match(t2, /^ /))
- return t1 tag nextil(t2);
- if(stag[ns] == ntag){
- tag = "/" tag;
- ns--;
- }
- else
- stag[++ns] = ntag;
- tag = "<" tag ">";
- return t1 tag nextil(t2);
- }
-}
-
-function inline(t) {
- ilcode = 0;
- ilcode2 = 0;
- ns = 0;
-
- return nextil(t);
-}
-
-function printp(tag) {
- if(!match(text, /^[ ]*$/)){
- text = inline(text);
- if(tag != "")
- oprint("<" tag ">" text "</" tag ">");
- else
- oprint(text);
- }
- text = "";
-}
-
-BEGIN {
- blank = 0;
- code = 0;
- hr = 0;
- html = 0;
- nl = 0;
- nr = 0;
- otext = "";
- text = "";
- par = "p";
-}
-
-# References
-!code && /^ *\[[^\]]*\]:[ ]+/ {
- sub(/^ *\[/, "");
- match($0, /\]/);
- id = substr($0, 1, RSTART - 1);
- sub(id "\\]:[ ]+", "");
- title = "";
- if(match($0, /\".*\"$/))
- title = "\" title=\"" substr($0, RSTART + 1, RLENGTH - 2);
- sub(/[ ]+\".*\"$/, "");
- url = eschtml($0);
- ref[id] = url title;
-
- subref(id);
- next;
-}
-
-# html
-!html && /^<(address|blockquote|center|dir|div|dl|fieldset|form|h[1-6r]|\
-isindex|menu|noframes|noscript|ol|p|pre|table|ul|!--)/ {
- if(code)
- oprint("</pre></code>");
- for(; !text && block[nl] == "blockquote"; nl--)
- oprint("</blockquote>");
- match($0, /^<(address|blockquote|center|dir|div|dl|fieldset|form|h[1-6r]|\
- isindex|menu|noframes|noscript|ol|p|pre|table|ul|!--)/);
- htag = substr($0, 2, RLENGTH - 1);
- if(!match($0, "(<\\/" htag ">)|((^<hr ?\\/?)|(--)>$)"))
- html = 1;
- if(html && match($0, /^<hr/))
- hr = 1;
- oprint($0);
- next;
-}
-
-html && (/(^<\/(address|blockquote|center|dir|div|dl|fieldset|form|h[1-6r]|\
-isindex|menu|noframes|noscript|ol|p|pre|table|ul).*)|(--)>$/ ||
-(hr && />$/)) {
- html = 0;
- hr = 0;
- oprint($0);
- next;
-}
-
-html {
- oprint($0);
- next;
-}
-
-# List and quote blocks
-
-# Remove indentation
-{
- for(nnl = 0; nnl < nl; nnl++)
- if((match(block[nnl + 1], /[ou]l/) && !sub(/^( | )/, "")) || \
- (block[nnl + 1] == "blockquote" && !sub(/^> ?/, "")))
- break;
-}
-nnl < nl && !blank && text && ! /^ ? ? ?([*+-]|([0-9]+\.)+)( +| )/ { nnl = nl; }
-# Quote blocks
-{
- while(sub(/^> /, ""))
- nblock[++nnl] = "blockquote";
-}
-# Horizontal rules
-{ hr = 0; }
-(blank || (!text && !code)) && /^ ? ? ?([-*_][ ]*)([-*_][ ]*)([-*_][ ]*)+$/ {
- if(code){
- oprint("</pre></code>");
- code = 0;
- }
- blank = 0;
- nnl = 0;
- hr = 1;
-}
-# List items
-block[nl] ~ /[ou]l/ && /^$/ {
- blank = 1;
- next;
-}
-{ newli = 0; }
-!hr && (nnl != nl || !text || block[nl] ~ /[ou]l/) && /^ ? ? ?[*+-]( +| )/ {
- sub(/^ ? ? ?[*+-]( +| )/, "");
- nnl++;
- nblock[nnl] = "ul";
- newli = 1;
-}
-(nnl != nl || !text || block[nl] ~ /[ou]l/) && /^ ? ? ?([0-9]+\.)+( +| )/ {
- sub(/^ ? ? ?([0-9]+\.)+( +| )/, "");
- nnl++;
- nblock[nnl] = "ol";
- newli = 1;
-}
-newli {
- if(blank && nnl == nl && !par)
- par = "p";
- blank = 0;
- printp(par);
- if(nnl == nl && block[nl] == nblock[nl])
- oprint("</li><li>");
-}
-blank && ! /^$/ {
- if(match(block[nnl], /[ou]l/) && !par)
- par = "p";
- printp(par);
- par = "p";
- blank = 0;
-}
-
-# Close old blocks and open new ones
-nnl != nl || nblock[nl] != block[nl] {
- if(code){
- oprint("</pre></code>");
- code = 0;
- }
- printp(par);
- b = (nnl > nl) ? nblock[nnl] : block[nnl];
- par = (match(b, /[ou]l/)) ? "" : "p";
-}
-nnl < nl || (nnl == nl && nblock[nl] != block[nl]) {
- for(; nl > nnl || (nnl == nl && pblock[nl] != block[nl]); nl--){
- if(match(block[nl], /[ou]l/))
- oprint("</li>");
- oprint("</" block[nl] ">");
- }
-}
-nnl > nl {
- for(; nl < nnl; nl++){
- block[nl + 1] = nblock[nl + 1];
- oprint("<" block[nl + 1] ">");
- if(match(block[nl + 1], /[ou]l/))
- oprint("<li>");
- }
-}
-hr {
- oprint("<hr>");
- next;
-}
-
-# Code blocks
-code && /^$/ {
- if(blanK)
- oprint("");
- blank = 1;
- next;
-}
-!text && sub(/^( | )/, "") {
- if(blanK)
- oprint("");
- blank = 0;
- if(!code)
- oprint("<code><pre>");
- code = 1;
- $0 = eschtml($0);
- oprint($0);
- next;
-}
-code {
- oprint("</pre></code>");
- code = 0;
-}
-
-# Setex-style Headers
-text && /^=+$/ {printp("h1"); next;}
-text && /^-+$/ {printp("h2"); next;}
-
-# Atx-Style headers
-/^#+/ && (!newli || par=="p" || /^##/) {
- for(n = 0; n < 6 && sub(/^# */, ""); n++)
- sub(/#$/, "");
- par = "h" n;
-}
-
-# Paragraph
-/^$/ {
- printp(par);
- par = "p";
- next;
-}
-
-# Add text
-{ text = (text ? text " " : "") $0; }
-
-END {
- if(code){
- oprint("</pre></code>");
- code = 0;
- }
- printp(par);
- for(; nl > 0; nl--){
- if(match(block[nl], /[ou]l/))
- oprint("</li>");
- oprint("</" block[nl] ">");
- }
- gsub(/<<[^\"]*/, "", otext);
- print(otext);
-}
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