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file: Refactor internal implementation of file(STRINGS) 

Make room for encoding support.
This commit is contained in:
Clinton Stimpson 2014-08-04 10:45:13 -06:00 committed by Brad King
parent b0f6d3eb99
commit ffa373e711
1 changed files with 28 additions and 18 deletions
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46
Source/cmFileCommand.cxx
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@ -596,11 +596,29 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
int output_size = 0;
std::vector<std::string> strings;
std::string s;
int c;
while((!limit_count || strings.size() < limit_count) &&
(limit_input < 0 || static_cast<int>(fin.tellg()) < limit_input) &&
(c = fin.get(), fin))
fin)
{
std::string current_str;
int c = fin.get();
if(c == '\r')
{
// Ignore CR character to make output always have UNIX newlines.
continue;
}
else if((c >= 0x20 && c < 0x7F) || c == '\t' ||
(c == '\n' && newline_consume))
{
// This is an ASCII character that may be part of a string.
// Cast added to avoid compiler warning. Cast is ok because
// c is guaranteed to fit in char by the above if...
current_str += static_cast<char>(c);
}
if(c == '\n' && !newline_consume)
{
// The current line has been terminated. Check if the current
@ -621,26 +639,13 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
// Reset the string to empty.
s = "";
}
else if(c == '\r')
else if(current_str.empty())
{
// Ignore CR character to make output always have UNIX newlines.
}
else if((c >= 0x20 && c < 0x7F) || c == '\t' ||
(c == '\n' && newline_consume))
{
// This is an ASCII character that may be part of a string.
// Cast added to avoid compiler warning. Cast is ok because
// c is guaranteed to fit in char by the above if...
s += static_cast<char>(c);
}
else
{
// TODO: Support ENCODING option. See issue #10519.
// A non-string character has been found. Check if the current
// string matches the requirements. We require that the length
// be at least one no matter what the user specified.
if(s.length() >= minlen && s.length() >= 1 &&
(!have_regex || regex.find(s.c_str())))
(!have_regex || regex.find(s.c_str())))
{
output_size += static_cast<int>(s.size()) + 1;
if(limit_output >= 0 && output_size >= limit_output)
@ -654,10 +659,15 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
// Reset the string to empty.
s = "";
}
else
{
s += current_str;
}
// Terminate a string if the maximum length is reached.
if(maxlen > 0 && s.size() == maxlen)
{
// Terminate a string if the maximum length is reached.
if(s.length() >= minlen &&
(!have_regex || regex.find(s.c_str())))
{