X-Git-Url: https://git.plutz.net/?a=blobdiff_plain;f=markdown.awk;h=7e29c572213e553df07563099cf52683ed11b960;hb=426dac52b5648fea4854fb141452d113b5c2251a;hp=57a04e986703b122bc1d0f2a629ab0c03cf792cf;hpb=8e79399f2cf87e6d8715b7daeb62ee39f3436a6b;p=cgilite
diff --git a/markdown.awk b/markdown.awk
index 57a04e9..7e29c57 100755
--- a/markdown.awk
+++ b/markdown.awk
@@ -5,6 +5,20 @@
# Meant to support all features of John Grubers basic Markdown
# + a number of common extensions, mostly inspired by Pandoc Markdown
+# Copyright 2021 - 2023 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED âAS ISâ AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
# Supported Features / TODO:
# ==========================
# [x] done [ ] todo [-] not planned ? unsure
@@ -108,13 +122,6 @@ function URL ( text, sharp ) {
}
function inline( line, LOCAL, len, text, code, href, guard ) {
- nu = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\_]|_[[:alnum:]])*" # not underline (except when escaped)
- na = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\\\*])*" # not asterisk (except when escaped)
- ieu = "_([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])_" # inner (underline)
- isu = "__([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])__" # inner (underline)
- iea = "\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*" # inner (asterisk)
- isa = "\\*\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*\\*" # inner (asterisk)
-
if ( line ~ /^$/ ) { # Recursion End
return "";
@@ -140,6 +147,11 @@ function inline( line, LOCAL, len, text, code, href, guard ) {
return "" code "
" inline( substr( line, len + 1 ) )
}
+ # Macros
+ } else if ( match( line, /^<<([^>]|>[^>])+>>/ ) ) {
+ len = RLENGTH;
+ return "" HTML( substr( line, 3, len - 4 ) ) "
" inline(substr(line, len + 1));
+
# Wiki style links
} else if ( match( line, /^\[\[([^]|]+)(\|[^]]+)?\]\]/) ) {
len = RLENGTH;
@@ -160,21 +172,28 @@ function inline( line, LOCAL, len, text, code, href, guard ) {
href = URL( substr( line, 2, len - 2) );
return "" href "" inline( substr( line, len + 1) );
+ # Verbatim inline HTML
+ } else if ( AllowHTML && match( line, /^(|<\?([^\?]|\?[^>])*\?>|]*>|])*\]\]>|<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)/) ) {
+ len = RLENGTH;
+ return substr( line, 1, len) inline(substr(line, len + 1));
+
# inline links
- # ,_______________________Image____________________________,
- } else if ( match(line, /^\[([^]]+|!\[[^]]*\]\([^"\)]+([ \t]+"[^"]+")?\)(\{[a-zA-Z \t-]*\})?)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/) ) {
+ } else if ( match(line, "^" lii "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)") ) {
len = RLENGTH;
- text = gensub(/^\[([^]]+|!\[[^]]*\]\([^"\)]+([ \t]+"[^"]+")?\)(\{[a-zA-Z \t-]*\})?)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, \
- "\\1", 1, substr(line, 1, len) );
- href = gensub(/^\[([^]]+|!\[[^]]*\]\([^"\)]+([ \t]+"[^"]+")?\)(\{[a-zA-Z \t-]*\})?)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, \
- "\\4", 1, substr(line, 1, len) );
- title = gensub(/^\[([^]]+|!\[[^]]*\]\([^"\)]+([ \t]+"[^"]+")?\)(\{[a-zA-Z \t-]*\})?)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, \
- "\\6", 1, substr(line, 1, len) );
- if ( title ) {
- return "" inline( text ) "" inline( substr( line, len + 1) );
- } else {
- return "" inline( text ) "" inline( substr( line, len + 1) );
- }
+ text = href = title = substr( line, 1, len);
+ sub("^\\[", "", text); sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)$", "", text);
+ sub("^" lii "\\([\n\t ]*", "", href); sub("([\n\t ]+" lit ")?[\n\t ]*\\)$", "", href);
+ sub("^" lii "\\([\n\t ]*" lid, "", title); sub("[\n\t ]*\\)$", "", title); sub("^[\n\t ]+", "", title);
+
+ if ( match(href, /^<.*>$/) ) { sub(/^, "", href); sub(/>$/, "", href); }
+ if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+ else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+ else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+ gsub(/\\/, "", href); gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+ return "" \
+ inline( text ) "" inline( substr( line, len + 1) );
# reference style links
} else if ( match(line, /^\[([^]]+)\] ?\[([^]]*)\]/ ) ) {
@@ -191,25 +210,33 @@ function inline( line, LOCAL, len, text, code, href, guard ) {
}
# inline images
- } else if ( match(line, /^!\[([^]]*)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/) ) {
- len = RLENGTH;
- text = gensub(/^!\[([^]]*)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\1", "g", substr(line, 1, len) );
- href = gensub(/^!\[([^]]*)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\2", "g", substr(line, 1, len) );
- title = gensub(/^!\[([^]]*)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\4", "g", substr(line, 1, len) );
- attrib = gensub(/^!\[([^]]*)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\6", "g", substr(line, 1, len) );
- if ( title && attrib ) {
- return "" \
- inline( substr( line, len + 1) );
- } else if ( title ) {
- return "" \
- inline( substr( line, len + 1) );
- } else if ( attrib ) {
- return "" \
- inline( substr( line, len + 1) );
- } else {
- return "" \
- inline( substr( line, len + 1) );
- }
+ } else if ( match(line, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?") ) {
+ len = RLENGTH; text = href = title = attrib = substr( line, 1, len);
+
+ sub("^!\\[", "", text);
+ sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", text);
+
+ sub("^!" lix "\\([\n\t ]*", "", href);
+ sub("([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", href);
+
+ sub("^!" lix "\\([\n\t ]*" lid, "", title);
+ sub("[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", title);
+ sub("^[\n\t ]+", "", title);
+
+ sub("^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)", "", attrib);
+ sub(/^\{[ \t]*/, "", attrib); sub(/[ \t]*\}$/, "", attrib); gsub(/[ \t]+/, " ", attrib);
+
+ if ( match(href, /^<.*>$/) ) { sub(/^, "", href); sub(/>$/, "", href); }
+ if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+ else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+ else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+ gsub(/^[\t ]+$/, "", text); gsub(/\\/, "", href);
+ gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+ return "" inline( substr( line, len + 1) );
# reference style images
} else if ( match(line, /^!\[([^]]*)\] ?\[([^]]*)\]/ ) ) {
@@ -276,16 +303,6 @@ function inline( line, LOCAL, len, text, code, href, guard ) {
len = RLENGTH;
return "" inline( substr( line, 2, len - 2 ) ) "" inline( substr( line, len + 1 ) );
- # Macros
- } else if ( AllowMacros && match( line, /^<<([^>]|>[^>])+>>/) ) {
- len = RLENGTH;
- return macro( substr( line, 3, len - 4 ) ) inline(substr(line, len + 1));
-
- # Verbatim inline HTML
- } else if ( AllowHTML && match( line, /^(|<\?([^\?]|\?[^>])*\?>|]*>|])*\]\]>|<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)/) ) {
- len = RLENGTH;
- return substr( line, 1, len) inline(substr(line, len + 1));
-
# Literal HTML entities
} else if ( match( line, /^&([a-zA-Z]{2,32}|#[0-9]{1,7}|#[xX][0-9a-fA-F]{1,6});/) ) {
len = RLENGTH;
@@ -388,7 +405,7 @@ function _block( block, LOCAL, st, len, text, title, attrib, href, guard, code,
# Pipe Tables (pandoc / php md / gfm )
} else if ( match(block, "^((\\|)?([^\n]+\\|)+[^\n]+(\\|)?)\n" \
- "((\\|)?:?(-+:?[\\|+])+:?-+:?(\\|)?)\n" \
+ "((\\|)?(:?-+:?[\\|+])+:?-+:?(\\|)?)\n" \
"((\\|)?([^\n]+\\|)+[^\n]+(\\|)?(\n|$))+" ) ) {
len = RLENGTH; st = RSTART;
#initialize empty arrays
@@ -622,35 +639,36 @@ function _block( block, LOCAL, st, len, text, title, attrib, href, guard, code,
return headline( n, text, 0 ) _block( substr( block, len + 1) );
# block images (wrapped in