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Changed parse_subrs() so that it'll work correctly both with wrongly sorted subr indices *and* non-contiguous subr arrays. Thanks to Tom K. for helping to isolate the problem.

This commit is contained in:
Just van Rossum 2000-07-25 16:20:57 +00:00
parent e6735234f4
commit 53fb1f5437
1 changed files with 23 additions and 6 deletions
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29
src/type1z/z1load.c
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@ -1243,6 +1243,11 @@
if ( parser->error ) if ( parser->error )
return; return;
/* position the parser right before the "dup" of the first subr */
skip_whitespace( parser );
skip_blackspace( parser ); /* "array" */
skip_whitespace( parser );
/* initialize subrs array */ /* initialize subrs array */
error = Z1_New_Table( table, loader->num_subrs, memory ); error = Z1_New_Table( table, loader->num_subrs, memory );
if ( error ) if ( error )
@ -1259,17 +1264,29 @@
FT_Byte* base; FT_Byte* base;
/* If the next token isn't "dup", we're also done. This */
/* happens when there are "holes" in the Subrs array. */
if ( strncmp( (char*)parser->cursor, "dup", 3 ) != 0 )
break;
index = Z1_ToInt( parser ); index = Z1_ToInt( parser );
/* make sure we get subr index and loop count in sync -- */
/* in some cases, the dictionary count is simply the last */
/* subr index + 1, with possible holes in the table */
if ( index > n )
n = index;
if ( !read_binary_data( parser, &size, &base ) ) if ( !read_binary_data( parser, &size, &base ) )
return; return;
/* The binary string is followed by one token, eg. "NP" */
/* (bound to "noaccess put") or by two separate tokens: */
/* "noaccess" & "put". We position the parser right */
/* before the next dup, if any. */
skip_whitespace( parser );
skip_blackspace( parser ); /* "NP" or "I" or "noaccess" */
skip_whitespace( parser );
if ( strncmp( (char*)parser->cursor, "put", 3 ) == 0 )
{
skip_blackspace( parser ); /* skip "put" */
skip_whitespace( parser );
}
/* some fonts use a value of -1 for lenIV to indicate that */ /* some fonts use a value of -1 for lenIV to indicate that */
/* the charstrings are unencoded.. */ /* the charstrings are unencoded.. */
/* */ /* */