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asciiman: support attribute passing

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Přemysl Eric Janouch
2022-09-30 18:13:01 +02:00
parent 089593bb0f
commit 0f3ed14575
1 changed files with 16 additions and 5 deletions
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21
tools/asciiman.awk
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@@ -6,13 +6,13 @@
# This is not intended to produce great output, merely useful output. # This is not intended to produce great output, merely useful output.
# As such, input documents should restrict themselves as follows: # As such, input documents should restrict themselves as follows:
# #
# - Attributes cannot be passed on the command line.
# - In-line formatting sequences must not overlap, # - In-line formatting sequences must not overlap,
# cannot be escaped, and cannot span lines. # cannot be escaped, and cannot span lines.
# - Heading underlines must match in byte length exactly. # - Heading underlines must match in byte length exactly.
# - Only a small subset of syntax is supported overall. # - Only a small subset of syntax is supported overall.
# #
# Also beware that the output has only been tested with GNU troff. # Also beware that the output has only been tested with GNU troff.
# Attributes can be passed via environment variables starting with "asciidoc-".
function fatal(message) { function fatal(message) {
print ".\\\" " FILENAME ":" FNR ": fatal error: " message print ".\\\" " FILENAME ":" FNR ": fatal error: " message
@@ -20,11 +20,18 @@ function fatal(message) {
exit 1 exit 1
} }
function expand(s, attr) { function getattribute(name) {
if (!(name in Attrs) && ("asciidoc-" name) in ENVIRON)
Attrs[name] = ENVIRON["asciidoc-" name]
return Attrs[name]
}
function expand(s, attr, v) {
# TODO: This should not expand unknown attribute names. # TODO: This should not expand unknown attribute names.
while (match(s, /[{][^{}]*[}]/)) { while (match(s, /[{][^{}]*[}]/)) {
attr = substr(s, RSTART + 1, RLENGTH - 2) s = substr(s, 1, RSTART - 1) \
s = substr(s, 1, RSTART - 1) Attrs[attr] substr(s, RSTART + RLENGTH) getattribute(substr(s, RSTART + 1, RLENGTH - 2)) \
substr(s, RSTART + RLENGTH)
} }
return s return s
} }
@@ -66,7 +73,11 @@ NR == 1 {
# Requesting tbl(1), even though we currently do not support tables. # Requesting tbl(1), even though we currently do not support tables.
print "'\\\" t" print "'\\\" t"
print ".TH \"" toupper(name) "\" \"" section "\"" printf ".TH \"%s\" \"%s\" \"\" \"%s\"",
toupper(name), section, getattribute("mansource")
if (getattribute("manmanual"))
printf " \"%s\"", getattribute("manmanual")
print ""
# Hyphenation is indeed rather annoying, in particular with long links. # Hyphenation is indeed rather annoying, in particular with long links.
print ".nh" print ".nh"