linux-merge-config.awk 7.58 KiB
#!/bin/awk -f
BEGIN {
nsects = 0
}
{
ARCH = $1
ARCHES[ARCH] = 1
TYPE = $2
TYPES[TYPE] = 1
NTOTAL++
ARCHTYPES[ARCH ":" TYPE] = 1
NARCHES[TYPE]++
if (NARCHES[TYPE] == 1)
NTOTALTYPES++
NTYPES[ARCH]++
if (NTYPES[ARCH] == 1)
NTOTALARCHES++
FILE = $3
cursects = nsects
while ((getline < FILE) > 0) {
if ($0 ~ /^\/\*/ || $0 ~ /^ \*\// || $0 ~ /^[ ]*$/)
continue
if ($0 ~ /^ * /) {
SECTION = gensub(/^ \* /,"",$0)
if (!(SECTION in sectno)) {
sectno[SECTION] = nsects
counts[SECTION] = 0
nsects++
} else if (cursects && cursects != nsects) {
no = sectno[SECTION]
diff = nsects - cursects
for (s in sectno) {
if (sectno[s] >= cursects)
sectno[s] = sectno[s] - cursects + no
else if (sectno[s] >= no)
sectno[s] += diff
}
}
cursects = nsect
cursym[SECTION] = counts[SECTION]
continue
}
if ($1 != "#define" && $1 != "#undef")
exit 1
SYMBOL = $2
n = index($0,SYMBOL)+length(SYMBOL)
if ($1 == "#define") {
n = index($0,SYMBOL)+length(SYMBOL)
VALUE = gensub(/^[ ]*/,"","",substr($0,n))
if (VALUE == "") VALUE = "__novalue__"
} else
VALUE = "__undefined__"
if (values[SYMBOL]) {
if (present[SYMBOL,ARCH,TYPE]) continue
present[SYMBOL,ARCH,TYPE] = 1
values[SYMBOL] = values[SYMBOL] SUBSEP ARCH ":" TYPE ":" VALUE
if (SECTION == sections[SYMBOL] && cursym[SECTION] && cursym[SECTION] != counts[SECTION]) {
no = pos[SYMBOL]
diff = counts[SECTION]-cursym[SECTION]
for (s in pos)
if (sections[s] == SECTION) {
if (pos[s] >= cursym[SECTION])
pos[s] = pos[s] - cursym[SECTION] + no
else if (pos[s] >= no)
pos[s] += diff
}
cursym[SECTION] = counts[SECTION]
}
} else {
present[SYMBOL,ARCH,TYPE] = 1 values[SYMBOL] = ARCH ":" TYPE ":" VALUE
sections[SYMBOL] = SECTION
pos[SYMBOL] = counts[SECTION]
counts[SECTION]++
}
}
close(FILE)
}
END {
for (SECTION in sectno)
x[sectno[SECTION]] = SECTION
for (i = 0; i < nsects; i++) {
SECTION = x[i]
if (i > 0)
printf "\n"
printf "/*\n * %s\n */\n", SECTION
split("",lines)
lastelse = ""
for (SYMBOL in sections)
if (sections[SYMBOL] == SECTION)
y[pos[SYMBOL]] = SYMBOL
for (j = 0; j < counts[SECTION]; j++) {
SYMBOL = y[j]
split("",ntype)
split("",total)
split(values[SYMBOL],z,SUBSEP)
split("",val)
totalsum = 0
for (k in z) {
split(z[k],l,":")
ARCH = l[1]
TYPE = l[2]
VALUE = substr(z[k],length(ARCH)+length(TYPE)+3)
if (val[VALUE])
val[VALUE] = val[VALUE] " "
val[VALUE] = val[VALUE] ARCH ":" TYPE
ntype[VALUE,TYPE] += 1
total[VALUE] += 1
totalsum += 1
}
split("",curlines)
append = 1
for (VALUE in val) {
if (total[VALUE] == NTOTAL) {
if (VALUE == "__undefined__")
curlines["1"] = "#undef " SYMBOL "\n"
else if (VALUE == "__novalue__")
curlines["1"] = "#define " SYMBOL "\n"
else
curlines["1"] = "#define " SYMBOL " " VALUE "\n"
if (!lines["1"])
append = 0
break
}
shorteststr = ""
curcount = 0
for (m = 0; m < 4; m++) {
str = ""
split(val[VALUE],yy)
if (total[VALUE] > 1 && total[VALUE] == NTOTAL - 1) {
found = 0
for (arch in ARCHES) {
for (type in TYPES) {
archtype = arch ":" type
if (ARCHTYPES [archtype] == 1) {
for (n in yy)
if (yy[n] == archtype)
break
if (yy[n] != archtype) {
found = 1 break
}
}
}
if (found)
break
}
if (NARCHES[type] > 1 && NTYPES[arch] > 1) {
str = "!defined(__module__" arch "_" type ")"
shorteststr = str
break
}
}
if (m == 0 || m == 2) {
nfull = 0
split("",yysave)
for (type in TYPES)
if (ntype[VALUE,type] == NARCHES[type]) {
if (str) str = str " || "
str = str "defined(__module__" type ")"
for (k in yy) {
split(yy[k], z, ":")
if (z[2] == type) {
yysave[k] = yy[k]
delete yy[k]
}
}
nfull++
} else
NOTYPE = type
if (m < 2 && nfull > 1 && nfull == NTOTALTYPES - 1) {
str = "!defined(__module__" NOTYPE ")"
for (k in yysave)
yy[k] = yysave[k]
for (k in yy) {
split(yy[k], z, ":")
if (z[2] != NOTYPE)
delete yy[k]
}
}
}
savestr = str
nfull = 0
split("",yysave)
for (arch in ARCHES) {
narch = 0
for (k in yy) {
split(yy[k], z, ":")
if (z[1] == arch)
narch++
}
if (narch == NTYPES[arch]) {
if (str) str = str " || "
str = str "defined(__module__" arch ")"
for (k in yy) {
split(yy[k], z, ":")
if (z[1] == arch) {
yysave[k] = yy[k]
delete yy[k]
}
}
nfull++
} else
NOARCH = arch
}
if (m < 2 && nfull > 1 && nfull == NTOTALARCHES - 1) {
str = savestr
for (k in yysave)
yy[k] = yysave[k]
if (str) str = str " || " str = str "!defined(__module__" NOARCH ")"
for (k in yy) {
split(yy[k], z, ":")
if (z[1] != NOARCH)
delete yy[k]
}
}
if (m == 1 || m == 3) {
savestr = str
nfull = 0
split("",yysave)
for (type in TYPES) {
ntypex = 0
for (k in yy) {
split(yy[k], z, ":")
if (z[2] == type)
ntypex++
}
if (ntypex == NARCHES[type]) {
if (str) str = str " || "
str = str "defined(__module__" type ")"
for (k in yy) {
split(yy[k], z, ":")
if (z[2] == type) {
yysave[k] = yy[k]
delete yy[k]
}
}
nfull++
} else
NOTYPE = type
}
if (m < 2 && nfull > 1 && nfull == NTOTALTYPES - 1) {
str = savestr
for (k in yysave)
yy[k] = yysave[k]
if (str) str = str " || "
str = "!defined(__module__" NOTYPE ")"
for (k in yy) {
split(yy[k], z, ":")
if (z[2] != NOTYPE)
delete yy[k]
}
}
}
for (k in yy) {
split(yy[k], z, ":")
if (str) str = str " || "
str = str "defined(__module__" z[1] "_" z[2] ")"
}
if (m == 0 || length(str) < length(shorteststr))
shorteststr = str
}
str = shorteststr
if (VALUE == "__undefined__")
curlines[str] = "#undef " SYMBOL "\n"
else if (VALUE == "__novalue__")
curlines[str] = "#define " SYMBOL "\n"
else
curlines[str] = "#define " SYMBOL " " VALUE "\n"
if (!lines[str])
append = 0
}
if (append) {
for (str in curlines)
if (curlines[str])
lines[str] = lines[str] curlines[str]
} else {
if (lines["1"])
printf "%s", lines["1"] else if (j > 0) {
ifstr = "#if "
for (str in lines)
if (lines[str] && str != lastelse) {
printf "%s %s\n%s", ifstr, str, lines[str]
ifstr = "#elif "
}
if (lastelse != "")
printf "#else\n%s", lines[lastelse]
printf "#endif\n"
}
split("",lines)
lastelse = ""
for (str in curlines)
if (curlines[str]) {
lines[str] = curlines[str]
if (totalsum == NTOTAL && length(str) > length(lastelse)) {
lastelse = str
}
}
}
}
if (lines["1"])
printf "%s", lines["1"]
else if (j > 0) {
ifstr = "#if "
for (str in lines)
if (lines[str] && str != lastelse) {
printf "%s %s\n%s", ifstr, str, lines[str]
ifstr = "#elif "
}
if (lastelse != "")
printf "#else\n%s", lines[lastelse]
printf "#endif\n"
}
}
}