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#!/usr/bin/awk -f
BEGIN {
fieldstr = "pkgname _ver pkgver pkgrel pkgdesc epoch" \
" *arch *license *options" \
" install changelog" \
" *depends *makedepends *checkdepends *optdepends" \
" *conflicts *provides" \
" url *source *noextract *md5sums *sha512sums" \
" _dir"
fieldcnt = split(fieldstr, fields)
for(i = 1; i <= fieldcnt; i++){
f = fields[i]
if(sub(/^[*]/, "", f)){
arrfield[f] = 1
}else if(sub(/^_/, "", f)){
cfield[f] = 1
}else{
strfield[f] = 1
}
fields[i] = f
}
COLS = 78; FS = "\n"; RS = ""
}
NF < 2 { next }
$1 == "packager" { packager = $2; next }
$1 == "maintainer" { maintainer = $2; next }
# pkgdesc has the only value where parameters do not expand.
$1 == "pkgdesc" { output[$1] = qnoexpand($2); next }
$1 == "customvars" {
for(i = 2; i <= NF; i++){
customvars[i - 1] = $i
}
customlen = NF - 1
next
}
{
for(i = 2; i <= NF; i++) $i = qexpand($i)
if(($1 in strfield) || ($1 in cfield)){
output[$1] = $2
}else {
arrtxt = wraparray(length($1) + 2)
if(arrfield[$1]){
output[$1] = arrtxt
}else{
unk[$1] = arrtxt
}
}
}
END {
if(maintainer){
print "# Maintainer: " maintainer "\n"
}else if(packager){
print "# Packager: " packager "\n"
}else{
print "# Packager: Anonymous\n"
}
OFS = "="; ORS = "\n";
for(i = 1; i <= fieldcnt; i++){
f = fields[i]
if(!(f in output)) continue
v = output[f]
if(f in cfield) f = "_" f
print f, v
}
for(i = 1; i <= customlen; i++){
f = customvars[i]
if(f in unk){
print "_" f, unk[f]
}else{
printf("pbfields: error: customvar \"%s\" has no value\n", f) \
> "/dev/stderr"
exit 100
}
}
}
function wraparray (indent)
{
if(NF == 1) return "()" # this shouldn't happen but just in case.
line = ""
delete lines
linecount = 0
i = 2
while(i <= NF){
linelen = length(line)
if((indent + linelen + 1 + length($i) > COLS) && linelen > 0){
lines[++linecount] = line
line = ""
}else{
if(linelen == 0) line = $(i++)
else line = line " " $(i++)
}
}
if(length(line) > 0) lines[++linecount] = line
indtxt = sprintf("%" indent "s", "")
txt = "(" lines[1]
for(i=2; i<=linecount; i++) txt = txt "\n" indtxt lines[i]
txt = txt ")"
return txt
}
# Quote field value so that parameters ARE expanded.
# NEVER expand command substition (ie backtick or $(...))
function qexpand (v)
{
if(v ~ /[$']/){
gsub(/["`]/, "\\\\&", v)
return sprintf("\"%s\"", v)
}else if(v ~ /[ <>`"]/){
return sprintf("'%s'", v)
}else{
return v
}
}
# Quote field value so that parameters ARE NOT expanded.
function qnoexpand (v)
{
if(v ~ /'/){
gsub(/[$"`]/, "\\\\&", v)
return sprintf("\"%s\"", v)
}else if(v ~ /[ $"`<>]/){
return sprintf("'%s'", v)
}else{
return v
}
}
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