71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
|
// Filename: check_include.cxx
|
||
|
|
// Created by: drose (16Oct00)
|
||
|
|
//
|
||
|
|
////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#include "check_include.h"
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////
|
||
|
|
// Function: check_include
|
||
|
|
// Description: Checks to see if the given line is a C/C++ #include
|
||
|
|
// directive. If it is, returns the named filename;
|
||
|
|
// otherwise, returns the empty string.
|
||
|
|
////////////////////////////////////////////////////////////////////
|
||
|
|
string
|
||
|
|
check_include(const string &line) {
|
||
|
|
// Skip initial whitespace on the line.
|
||
|
|
size_t p = 0;
|
||
|
|
while (p < line.length() && isspace(line[p])) {
|
||
|
|
p++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (p >= line.length() || line[p] != '#') {
|
||
|
|
// No hash mark.
|
||
|
|
return string();
|
||
|
|
}
|
||
|
|
|
||
|
|
// We have a hash mark! Skip more whitespace.
|
||
|
|
p++;
|
||
|
|
while (p < line.length() && isspace(line[p])) {
|
||
|
|
p++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (p >= line.length() || !(line.substr(p, 7) == "include")) {
|
||
|
|
// Some other directive, not #include.
|
||
|
|
return string();
|
||
|
|
}
|
||
|
|
|
||
|
|
// It's an #include directive! Skip more whitespace.
|
||
|
|
p += 7;
|
||
|
|
while (p < line.length() && isspace(line[p])) {
|
||
|
|
p++;
|
||
|
|
}
|
||
|
|
|
||
|
|
// note: ppremake cant expand cpp #define vars used as include targets yet
|
||
|
|
|
||
|
|
if (p >= line.length() || (line[p] != '"' && line[p] != '<')) {
|
||
|
|
// if it starts with a capital, assume its a #define var used as
|
||
|
|
// include tgt, and don't print a warning
|
||
|
|
if(!((line[p]>='A')&&(line[p]<='Z'))) {
|
||
|
|
cerr << "Ignoring invalid #include directive: " << line << "\n";
|
||
|
|
}
|
||
|
|
return string();
|
||
|
|
}
|
||
|
|
|
||
|
|
char close = (line[p] == '"') ? '"' : '>';
|
||
|
|
|
||
|
|
p++;
|
||
|
|
// Now get the filename.
|
||
|
|
size_t q = p;
|
||
|
|
while (q < line.length() && line[q] != close) {
|
||
|
|
q++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (q >= line.length()) {
|
||
|
|
cerr << "Ignoring invalid #include directive: " << line << "\n";
|
||
|
|
return string();
|
||
|
|
}
|
||
|
|
|
||
|
|
return line.substr(p, q - p);
|
||
|
|
}
|