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Update token reader to handle balanced parens and to allow arbitrary backslash escapes.

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Update unit test to omit path information from filename.
This commit is contained in:
Michael R Sweet
2021-05-09 21:32:09 -04:00
parent 5f43761537
commit af8c731699
2 changed files with 29 additions and 9 deletions
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21
pdfio-token.c
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@ -148,7 +148,8 @@ _pdfioTokenRead(_pdfio_token_t *tb, // I - Token buffer/stack
char *buffer, // I - String buffer
size_t bufsize) // I - Size of string buffer
{
int ch; // Character
int ch, // Character
parens = 0; // Parenthesis level
char *bufptr, // Pointer into buffer
*bufend, // End of buffer
state = '\0'; // Current state
@ -210,7 +211,7 @@ _pdfioTokenRead(_pdfio_token_t *tb, // I - Token buffer/stack
switch (state)
{
case '(' : // Literal string
while ((ch = get_char(tb)) != EOF && ch != ')')
while ((ch = get_char(tb)) != EOF)
{
if (ch == '\\')
{
@ -267,10 +268,22 @@ _pdfioTokenRead(_pdfio_token_t *tb, // I - Token buffer/stack
break;
default :
_pdfioFileError(tb->pdf, "Unknown escape '\\%c' in literal string.", ch);
return (false);
// Ignore blackslash per PDF spec...
break;
}
}
else if (ch == '(')
{
// Keep track of parenthesis
parens ++;
}
else if (ch == ')')
{
if (parens == 0)
break;
parens --;
}
if (bufptr < bufend)
{