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moved implementation of LineParser into lineparse.cpp

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@3706 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
kichik 2004-10-11 11:45:15 +00:00
parent 3ed6d7ea22
commit a0e67e3e8a
4 changed files with 220 additions and 186 deletions
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197
Source/lineparse.h
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@ -4,194 +4,23 @@
class LineParser {
public:
LineParser(bool bCommentBlock)
{
m_bCommentBlock=bCommentBlock;
m_nt=m_eat=0;
m_tokens=0;
}
~LineParser()
{
freetokens();
}
bool InCommentBlock()
{
return m_bCommentBlock;
}
int parse(char *line, int ignore_escaping=0) // returns -1 on error
{
freetokens();
bool bPrevCB=m_bCommentBlock;
int n=doline(line, ignore_escaping);
if (n) return n;
if (m_nt)
{
m_bCommentBlock=bPrevCB;
m_tokens=(char**)malloc(sizeof(char*)*m_nt);
n=doline(line, ignore_escaping);
if (n)
{
freetokens();
return -1;
}
}
return 0;
}
LineParser(bool bCommentBlock);
virtual ~LineParser();
int getnumtokens() { return m_nt-m_eat; }
bool InCommentBlock();
int parse(char *line, int ignore_escaping=0); // returns -1 on error
int getnumtokens();
void eattoken();
double gettoken_float(int token, int *success=0);
int gettoken_int(int token, int *success=0);
char *gettoken_str(int token);
int gettoken_enum(int token, const char *strlist); // null seperated list
void eattoken() { m_eat++; }
double gettoken_float(int token, int *success=0)
{
token+=m_eat;
if (token < 0 || token >= m_nt)
{
if (success) *success=0;
return 0.0;
}
if (success)
{
char *t=m_tokens[token];
*success=*t?1:0;
while (*t)
{
if ((*t < '0' || *t > '9')&&*t != '.') *success=0;
t++;
}
}
return atof(m_tokens[token]);
}
int gettoken_int(int token, int *success=0)
{
token+=m_eat;
if (token < 0 || token >= m_nt || !m_tokens[token][0])
{
if (success) *success=0;
return 0;
}
char *tmp;
int l;
if (m_tokens[token][0] == '-') l=strtol(m_tokens[token],&tmp,0);
else l=(int)strtoul(m_tokens[token],&tmp,0);
if (success) *success=! (int)(*tmp);
return l;
}
char *gettoken_str(int token)
{
token+=m_eat;
if (token < 0 || token >= m_nt) return "";
return m_tokens[token];
}
int gettoken_enum(int token, const char *strlist) // null seperated list
{
int x=0;
char *tt=gettoken_str(token);
if (tt && *tt) while (*strlist)
{
if (!stricmp(tt,strlist)) return x;
strlist+=strlen(strlist)+1;
x++;
}
return -1;
}
private:
void freetokens()
{
if (m_tokens)
{
int x;
for (x = 0; x < m_nt; x ++)
free(m_tokens[x]);
free(m_tokens);
}
m_tokens=0;
m_nt=0;
}
int doline(char *line, int ignore_escaping=0)
{
m_nt=0;
if ( m_bCommentBlock )
{
while ( *line )
{
if ( *line == '*' && *(line+1) == '/' )
{
m_bCommentBlock=false; // Found end of comment block
line+=2;
break;
}
line++;
}
}
while (*line == ' ' || *line == '\t') line++;
while (*line)
{
int lstate=0; // 1=", 2=`, 4='
if (*line == ';' || *line == '#') break;
if (*line == '/' && *(line+1) == '*')
{
m_bCommentBlock = true;
line+=2;
return doline(line, ignore_escaping);
}
if (*line == '\"') lstate=1;
else if (*line == '\'') lstate=2;
else if (*line == '`') lstate=4;
if (lstate) line++;
int nc=0;
char *p = line;
while (*line)
{
if (line[0] == '$' && line[1] == '\\') {
switch (line[2]) {
case '"':
case '\'':
case '`':
nc += ignore_escaping ? 3 : 1;
line += 3;
continue;
}
}
if (lstate==1 && *line =='\"') break;
if (lstate==2 && *line =='\'') break;
if (lstate==4 && *line =='`') break;
if (!lstate && (*line == ' ' || *line == '\t')) break;
line++;
nc++;
}
if (m_tokens)
{
int i;
m_tokens[m_nt]=(char*)malloc(nc+1);
for (i = 0; p < line; i++, p++) {
if (!ignore_escaping && p[0] == '$' && p[1] == '\\') {
switch (p[2]) {
case '"':
case '\'':
case '`':
p += 2;
}
}
m_tokens[m_nt][i] = *p;
}
m_tokens[m_nt][nc]=0;
}
m_nt++;
if (lstate)
{
if (*line) line++;
else return -2;
}
while (*line == ' ' || *line == '\t') line++;
}
return 0;
}
void freetokens();
int doline(char *line, int ignore_escaping=0);
int m_eat;
int m_nt;
bool m_bCommentBlock;