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make it thread safe

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40493 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Georg Baum 2011-12-13 19:56:00 +00:00
parent 4663e5ec88
commit 67af5a5388
1 changed files with 22 additions and 21 deletions
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43
src/lengthcommon.cpp
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@ -58,22 +58,6 @@ Length::UNIT unitFromString(string const & data)
namespace {
/// used to return numeric values in parsing vspace
double number[4] = { 0, 0, 0, 0 };
/// used to return unit types in parsing vspace
Length::UNIT unit[4] = {
Length::UNIT_NONE,
Length::UNIT_NONE,
Length::UNIT_NONE,
Length::UNIT_NONE
};
/// the current position in the number array
int number_index;
/// the current position in the unit array
int unit_index;
/// skip n characters of input
inline void lyx_advance(string & data, size_t n)
{
@ -91,6 +75,8 @@ inline bool isEndOfData(string const & data)
/**
* nextToken - return the next token in the input
* @param data input string
* @param number_index the current position in the number array
* @param unit_index the current position in the unit array
* @return a char representing the type of token returned
*
* The possible return values are :
@ -100,7 +86,8 @@ inline bool isEndOfData(string const & data)
* u a unit type (stored in unit array)
* E parse error
*/
char nextToken(string & data)
char nextToken(string & data, double * number, int & number_index,
Length::UNIT * unit, int & unit_index)
{
data = ltrim(data);
@ -267,7 +254,13 @@ bool isValidGlueLength(string const & data, GlueLength * result)
}
// end of hack
number_index = unit_index = 1; // entries at index 0 are sentinels
// used to return numeric values in parsing vspace
double number[4] = { 0, 0, 0, 0 };
// used to return unit types in parsing vspace
Length::UNIT unit[4] = {Length::UNIT_NONE, Length::UNIT_NONE,
Length::UNIT_NONE, Length::UNIT_NONE};
int number_index = 1; // entries at index 0 are sentinels
int unit_index = 1; // entries at index 0 are sentinels
// construct "pattern" from "data"
size_t const pattern_max_size = 20;
@ -275,7 +268,8 @@ bool isValidGlueLength(string const & data, GlueLength * result)
while (!isEndOfData(buffer)) {
if (pattern.size() > pattern_max_size)
return false;
char const c = nextToken(buffer);
char const c = nextToken(buffer, number, number_index, unit,
unit_index);
if (c == 'E')
return false;
pattern.push_back(c);
@ -334,13 +328,20 @@ bool isValidLength(string const & data, Length * result)
}
// end of hack
number_index = unit_index = 1; // entries at index 0 are sentinels
// used to return numeric values in parsing vspace
double number[4] = { 0, 0, 0, 0 };
// used to return unit types in parsing vspace
Length::UNIT unit[4] = {Length::UNIT_NONE, Length::UNIT_NONE,
Length::UNIT_NONE, Length::UNIT_NONE};
int number_index = 1; // entries at index 0 are sentinels
int unit_index = 1; // entries at index 0 are sentinels
// construct "pattern" from "data"
while (!isEndOfData(buffer)) {
if (pattern_index > 2)
return false;
pattern[pattern_index] = nextToken(buffer);
pattern[pattern_index] = nextToken(buffer, number,
number_index, unit, unit_index);
if (pattern[pattern_index] == 'E')
return false;
++pattern_index;