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|
# awk script to merge a config-specific .symlist file with others.
# The input files should be existing .abilist files, and a .symlist
# file. This must be run with awk -v config=REGEXP to specify a
# regexp matching configuration tuples for which the .symlist input
# defines an ABI. The result merges all duplicate occurrences of any
# symbol into a stanza listing the regexps matching configurations
# that contain it and giving associated versions.
# The merged file contains stanzas in the form:
# GLIBC_x.y regexp...
# | GLIBC_x.y.z regexp...
# | GLIBC_m.n regexp...
# function F
# variable D 0x4
BEGIN { current = "UNSET" }
/^[^| ]/ {
if (NF < 2 && config == "") {
print FILENAME ":" FNR ": BAD SET LINE:", $0 > "/dev/stderr";
exit 2;
}
if (NF < 2) {
current = $1 ":" config;
}
else {
# Filter out the old stanzas from the config we are merging in.
# That way, if a set disappears from the .symlist file for this
# config, the old stanza doesn't stay in the merged output tagged
# for this config. (Disappearing sets might happen during development,
# and between releases could happen on a soname change).
nc = 0;
for (i = 2; i <= NF; ++i)
if ($i != config)
c[nc++] = $i;
if (nc == 0)
current = "";
else {
current = $1 ":" c[0];
for (i = 1; i < nc; ++i)
current = current "," $1 ":" c[i];
}
}
next;
}
/^\| / {
if (NF < 3 || current == "UNSET") {
print FILENAME ":" FNR ": BAD | LINE:", $0 > "/dev/stderr";
exit 2;
}
nc = 0;
for (i = 3; i <= NF; ++i)
if ($i != config)
c[nc++] = $i;
for (i = 0; i < nc; ++i)
current = current "," $2 ":" c[i];
next;
}
{
if (current == "") next;
if (current == "UNSET") {
print FILENAME ":" FNR ": IGNORED LINE:", $0 > "/dev/stderr";
next;
}
ns = split(seen[$0], s, ",");
nc = split(current, c, ",");
for (i = 1; i <= nc; ++i) {
if (c[i] == "")
continue;
# Sorted insert.
for (j = 1; j <= ns; ++j) {
if (c[i] == s[j])
break;
if (c[i] < s[j]) {
for (k = ns; k >= j; --k)
s[k + 1] = s[k];
s[j] = c[i];
++ns;
break;
}
}
if (j > ns)
s[++ns] = c[i];
}
seen[$0] = s[1];
for (i = 2; i <= ns; ++i)
seen[$0] = seen[$0] "," s[i];
next;
}
END {
for (line in seen) {
if (seen[line] in stanzas)
stanzas[seen[line]] = stanzas[seen[line]] "\n" line;
else
stanzas[seen[line]] = line;
}
ns = split("", s);
for (configs in stanzas) {
# Sorted insert.
for (j = 1; j <= ns; ++j) {
if (configs == s[j])
break;
if (configs < s[j]) {
for (k = ns; k >= j; --k)
s[k + 1] = s[k];
s[j] = configs;
++ns;
break;
}
}
if (j > ns)
s[++ns] = configs;
}
# S[1..NS] is now a sorted list of stanza identifiers.
# STANZAS[ID] contains the lines for that stanza.
# All we have to do is pretty-print the stanza ID,
# and then print the sorted list.
for (i = 1; i <= ns; ++i) {
# S[I] is a sorted, comma-separated list of SET:CONFIG pairs.
# All we have to do is pretty-print them.
nc = split(s[i], c, ",");
lastvers = lastconf = "";
for (j = 1; j <= nc; ++j) {
split(c[j], temp, ":");
version = temp[1];
conf = temp[2];
if (version != lastvers)
printf "%s%s", (lastvers != "" ? "\n| " : ""), version;
# Hack: if CONF is foo.*/bar and LASTCONF was foo.*,
# then we can omit the foo.*/bar since foo.* matches already.
# Note we don't update LASTCONF, so foo.*/baz next time will match too.
else if ((slash = index(conf, ".*/")) > 0 && \
substr(conf, 1, slash + 2 - 1) == lastconf)
continue;
printf " %s", conf;
lastvers = version;
lastconf = conf;
}
print "";
outpipe = "sort";
print stanzas[s[i]] | outpipe;
close(outpipe);
}
}
|
