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Support ${...} and $(...) env variables in .vc files

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This commit is contained in:
Wilson Snyder
2011-03-21 12:25:31 -04:00
parent c83f12a55c
commit df0aa483ce
4 changed files with 31 additions and 9 deletions
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src/V3Options.cpp
+20 -4
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@@ -194,18 +194,33 @@ string V3Options::filenameNonExt (const string& filename) {
string V3Options::filenameSubstitute (const string& filename) {
string out;
enum { NONE, PAREN, CURLY } brackets = NONE;
for (string::size_type pos = 0; pos < filename.length(); ++pos) {
if (filename[pos] == '$') {
if ((filename[pos] == '$') && (pos+1 < filename.length())) {
switch (filename[pos+1]) {
case '{': brackets = CURLY; break;
case '(': brackets = PAREN; break;
default: brackets = NONE; break;
}
if (brackets != NONE) pos = pos+1;
string::size_type endpos = pos+1;
while ((endpos+1) < filename.length()
&& (isalnum(filename[endpos+1]) || filename[endpos+1]=='_'))
while (((endpos+1) < filename.length()) &&
(((brackets==NONE) && (isalnum(filename[endpos+1]) || filename[endpos+1]=='_')) ||
((brackets==CURLY) && (filename[endpos+1]!='}')) ||
((brackets==PAREN) && (filename[endpos+1]!=')'))))
++endpos;
// Catch bracket errors
if (((brackets==CURLY) && (filename[endpos+1]!='}')) ||
((brackets==PAREN) && (filename[endpos+1]!=')'))) {
v3fatal("Unmatched brackets in variable substitution in file: "+filename);
}
string envvar = filename.substr(pos+1,endpos-pos);
const char* envvalue = NULL;
if (envvar != "") envvalue = getenv(envvar.c_str());
if (envvalue) {
out += envvalue;
pos = endpos;
if (brackets==NONE) pos = endpos;
else pos = endpos+1;
} else {
out += filename[pos]; // *pos == '$'
}
@@ -214,6 +229,7 @@ string V3Options::filenameSubstitute (const string& filename) {
}
}
return out;
}
bool V3Options::filenameIsRel(const string& filename) {