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131 lines
2.8 KiB
Plaintext
131 lines
2.8 KiB
Plaintext
# -*- mode: awk; indent-tabs-mode: nil; -*-
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#
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# parseini --- parses 'ini' style configuration files.
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#
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# Usage:
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# awk -f parseini S=<section> P=<param> <ini file>
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#
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# if section is an empty string, then we use the default section
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#
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# example ini file:
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#
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# fruit = apple
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# fruit = pear
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# multiline = this is a multiline \
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# parameter
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#
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# # this is a comment
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# [colors]
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# red = yes
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# green = no
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# blue = maybe
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#
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# [ocean]
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# fish = red
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# fish = blue
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#
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# example usage:
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# > awk -f parseini S=ocean P=fish testfile.ini
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# would return:
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# red
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# blue
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#
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BEGIN {
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readlines = 1
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implied = 1
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}
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# remove lines starting with #, but not #!
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/^#[^!]/ {next}
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# skip blank
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/^[ \r\t]*$/ {next}
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# we want to read the lines of the matched section
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# and disable for other sections
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/^\[.+\][ \r\t]*$/ {
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continueline = 0
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if (S && implied) {
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nline = 0
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implied = 0
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}
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if (S && match($0, "^\\[" S "\\][ \n]*")) {
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# we found the section, so start reading.
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readlines = 1
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}
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else {
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# no section, so stop reading lines
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if (readlines) readlines = 0
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}
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next
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}
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# when reading, store lines.
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{
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if (!readlines) next
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line[nline++] = $0
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if ($0 ~ /\\[ \r\t]*$/)
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continueline = 1
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else
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continueline = 0
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}
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# process the read lines lines, matching parameters
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END {
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# if section is set but implied is still true
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# then we never found the section, so use everything
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if (S && implied) {
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nline = 0
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}
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# if have P then find P in read lines and get values
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if (P) {
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MATCH = "^[ \r\t]*" P "[ \r\t]*="
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continueline = 0
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for (x = 0; x < nline; ++x) {
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v = line[x]
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if (continueline) {
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sub(/[ \r\t]+$/, "", v)
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if (v ~ /\\$/) {
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v = substr(v, 1, length(v)-1)
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sub(/[ \r\t]+$/, "", v)
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}
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if (v) value[nvalue++] = v
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}
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else if (v ~ MATCH) {
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sub(MATCH, "", v)
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sub(/^[ \r\t]+/, "", v)
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sub(/[ \r\t]+$/, "", v)
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if (v ~ /\\$/) {
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continueline = 1
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v = substr(v, 1, length(v)-1)
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sub(/[ \r\t]+$/, "", v)
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}
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if (v) value[nvalue++] = v
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}
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}
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# copy parameter definition to output array
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nline = nvalue
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for (x = 0; x < nvalue; ++x)
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line[x] = value[x]
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}
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# trim all leading & trailing whitespace;
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# except for leading whitespace in continuation lines,
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for (x = 0; x < nline; ++x) {
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sub(/^[ \r\t]+/, "", line[x])
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sub(/[ \r\t]+$/, "", line[x])
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}
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# output the final result
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for (x = 0; x < nline; ++x)
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print line[x]
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if (nline) exit 0
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else exit 1
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}
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