forked from minhngoc25a/freetype2
[gf] Add tracing and error handling.
* src/gf/gfdrivr.c, src/gf/gflib.c: Add FT_TRACEX and FT_ERROR messages for debugging. * src/gf/module.mk: Fixes to make output of first `make' call prettier.
This commit is contained in:
Parth Wazurkar
parent
f2c92f1173
commit
d0c08730c7
102
src/gf/gfdrivr.c
102
src/gf/gfdrivr.c
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@ -143,7 +143,6 @@
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memory = FT_FACE_MEMORY( face );
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gf_free_font( gfface, memory );
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/* FT_FREE( ); */
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}
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@ -158,19 +157,47 @@
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FT_Error error;
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FT_Memory memory = FT_FACE_MEMORY( face );
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GF_Glyph go;
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int i,count;
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FT_UInt16 i,count;
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FT_UNUSED( num_params );
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FT_UNUSED( params );
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go=NULL;
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FT_TRACE2(( "GF driver\n" ));
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/* load font */
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error = gf_load_font( stream, memory, &go );
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if ( error )
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if ( FT_ERR_EQ( error, Unknown_File_Format ) )
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{
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FT_TRACE2(( " not a GF file\n" ));
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goto Fail;
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}
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else if ( error )
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goto Exit;
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face->gf_glyph = go ;
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/* sanity check */
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if ( !face->gf_glyph->bm_table )
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{
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FT_TRACE2(( "glyph bitmaps not allocated\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Fail;
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}
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/* GF cannot have multiple faces in a single font file.
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* XXX: non-zero face_index is already invalid argument, but
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* Type1, Type42 driver has a convention to return
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* an invalid argument error when the font could be
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* opened by the specified driver.
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*/
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if ( face_index > 0 && ( face_index & 0xFFFF ) > 0 )
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{
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FT_ERROR(( "GF_Face_Init: invalid face index\n" ));
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GF_Face_Done( gfface );
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return FT_THROW( Invalid_Argument );
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}
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/* we now need to fill the root FT_Face fields */
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/* with relevant information */
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@ -182,6 +209,7 @@
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* XXX: TO-DO: gfface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
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* XXX: I have to check for this.
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*/
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gfface->family_name = NULL;
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count=0;
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for (i = 0; i < 256; i++)
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@ -189,9 +217,18 @@
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if(go->bm_table[i].bitmap != NULL)
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count++;
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}
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gfface->num_glyphs = (FT_Long)count;printf("count is %d", count);
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gfface->num_glyphs = (FT_Long)count;
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FT_TRACE4(( " number of glyphs: allocated %d\n",gfface->num_glyphs));
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if ( gfface->num_glyphs <= 0 )
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{
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FT_ERROR(( "GF_Face_Init: glyphs not allocated\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Fail;
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}
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gfface->num_fixed_sizes = 1;
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if ( FT_NEW_ARRAY( gfface->available_sizes, 1 ) )
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goto Exit;
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@ -200,32 +237,36 @@
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bsize->width = (FT_Short) face->gf_glyph->font_bbx_w ;
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bsize->height = (FT_Short) face->gf_glyph->font_bbx_h ;
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bsize->size = (FT_Short) face->gf_glyph->ds ; /* Preliminary to be checked for 26.6 fractional points*/
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bsize->size = (FT_Pos) face->gf_glyph->ds ; /* Preliminary to be checked for 26.6 fractional points*/
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/*x_res = ; To be Checked for x_resolution and y_resolution
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y_res = ;*/
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bsize->y_ppem = face->gf_glyph->font_bbx_yoff ;
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bsize->x_ppem = face->gf_glyph->font_bbx_xoff ;
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bsize->y_ppem = (FT_Pos)face->gf_glyph->font_bbx_yoff ;
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bsize->x_ppem = (FT_Pos)face->gf_glyph->font_bbx_xoff ;
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}
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/* Charmaps */
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/* Charmaps */
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{
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FT_CharMapRec charmap;
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{
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FT_CharMapRec charmap;
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charmap.encoding = FT_ENCODING_NONE;
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/* initial platform/encoding should indicate unset status? */
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charmap.platform_id = TT_PLATFORM_APPLE_UNICODE; /*Preliminary */
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charmap.encoding_id = TT_APPLE_ID_DEFAULT;
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charmap.face = FT_FACE( face );
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error = FT_CMap_New( &gf_cmap_class, NULL, &charmap, NULL );
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charmap.encoding = FT_ENCODING_NONE;
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/* initial platform/encoding should indicate unset status? */
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charmap.platform_id = TT_PLATFORM_APPLE_UNICODE; /*Preliminary */
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charmap.encoding_id = TT_APPLE_ID_DEFAULT;
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charmap.face = FT_FACE( face );
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error = FT_CMap_New( &gf_cmap_class, NULL, &charmap, NULL );
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if ( error )
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goto Fail;
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}
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if ( error )
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goto Fail;
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}
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if ( go->code_max < go->code_min )
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{
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FT_TRACE2(( "invalid number of glyphs\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Fail;
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}
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Fail:
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GF_Face_Done( gfface );
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@ -315,7 +356,8 @@
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goto Exit;
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}
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if ( glyph_index >= (FT_UInt)face->num_glyphs )
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if ( !go ||
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glyph_index >= (FT_UInt)( face->num_glyphs ) )
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{
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error = FT_THROW( Invalid_Argument );
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goto Exit;
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@ -328,15 +370,31 @@
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if ((glyph_index < go->code_min) || (go->code_max < glyph_index))
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{
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FT_TRACE2(( "invalid glyph index\n" ));
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error = FT_THROW( Invalid_Argument );
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goto Exit;
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}
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if ( !go->bm_table )
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{
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FT_TRACE2(( "invalid bitmap table\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Exit;
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}
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/* slot, bitmap => freetype, glyph => gflib */
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bm = gf->gf_glyph->bm_table[glyph_index];
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bitmap->rows = bm.mv_y ; /* Prelimiary */
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bitmap->width = bm.mv_x ; /* Prelimiary */
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if ( !bm.raster )
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{
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FT_TRACE2(( "invalid bitmap width\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Exit;
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}
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bitmap->pitch = bm.raster ; /* Prelimiary */
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/* note: we don't allocate a new array to hold the bitmap; */
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@ -155,6 +155,7 @@ unsigned char bit_table[] = {
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h = max_n - min_n + 1;
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if ((w < 0) || (h < 0))
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{
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FT_ERROR(( "gf_read_glyph: invalid w and h values\n" ));
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error = FT_THROW( Invalid_File_Format );
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return -1;
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}
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@ -289,75 +290,89 @@ unsigned char bit_table[] = {
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/* seek to post_post instr. */
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/* fseek(fp, -1, SEEK_END); */
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if( FT_STREAM_SEEK( stream->size - 1 ) )
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goto ErrExit;
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goto Exit;
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if( FT_STREAM_SEEK( stream->size - 1 ) )
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goto ErrExit;
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goto Exit;
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while ( READ_UINT1( stream ) == 223)
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{
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if( FT_STREAM_SEEK( stream->pos -2 ) )
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goto ErrExit;
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goto Exit;
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/* fseek(fp, -2, SEEK_CUR); */
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}
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if( FT_STREAM_SEEK( stream->pos -1 ) )
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goto ErrExit;
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goto Exit;
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d= READ_UINT1( stream );
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if (d != GF_ID)
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{
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FT_ERROR(( "gf_load_font: missing GF_ID(131) field\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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FT_TRACE2(( "gf_load_font: GF_ID(131) found " ));
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/* fseek(fp, -6, SEEK_CUR); */
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if(FT_STREAM_SEEK( stream->pos -6 ))
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goto ErrExit;
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goto Exit;
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/* check if the code is post_post */
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if (READ_UINT1( stream ) != GF_POST_POST)
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{
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FT_ERROR(( "gf_load_font: missing GF_POST_POST(249) field\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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FT_TRACE2(( "gf_load_font: GF_POST_POST(249) found\n" ));
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/* read pointer to post instr. */
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if(FT_READ_ULONG( ptr_post ))
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goto ErrExit;
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goto Exit;
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if (ptr_post == -1)
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{
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FT_ERROR(( "gf_load_font: invalid postamble pointer\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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/* goto post instr. and read it */
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/* fseek(fp, ptr_post, SEEK_SET); */
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if(FT_STREAM_SEEK( ptr_post ))
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goto ErrExit;
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goto Exit;
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if (READ_UINT1( stream ) != GF_POST)
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{
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FT_ERROR(( "gf_load_font: missing GF_POST(248) field\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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FT_TRACE2(( "gf_load_font: GF Postamble found\n" ));FT_TRACE2(( "gf_load_font: GF Postamble found\n" ));
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if(FT_READ_ULONG( ptr_p ))
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goto ErrExit;
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goto Exit;
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if(FT_READ_ULONG( ds ))
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goto ErrExit;
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goto Exit;
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if(FT_READ_ULONG( check_sum ))
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goto ErrExit;
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goto Exit;
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if(FT_READ_ULONG( hppp ))
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goto ErrExit;
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goto Exit;
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if(FT_READ_ULONG( vppp ))
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goto ErrExit;
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goto Exit;
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min_m = READ_INT4( stream );
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max_m = READ_INT4( stream );
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min_n = READ_INT4( stream );
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max_n = READ_INT4( stream );
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if( ptr_p < 0 )
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{
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FT_ERROR(( "gf_load_font: invalid pointer in postamble\n" ));
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goto Exit;
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}
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#if 0
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gptr = ftell(fp);
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#endif
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@ -386,7 +401,7 @@ unsigned char bit_table[] = {
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else
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{
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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if (code < bc)
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bc = code;
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@ -401,11 +416,13 @@ unsigned char bit_table[] = {
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nchars = ec - bc + 1;
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/*go= malloc(sizeof(GF_GlyphRec));*/
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if( FT_ALLOC(go, sizeof(GF_GlyphRec)) )
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goto ErrExit;
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goto Exit;
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/*go->bm_table = (GF_Bitmap)malloc(nchars* sizeof(GF_BitmapRec));*/
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if( FT_ALLOC_MULT(go->bm_table, sizeof(GF_BitmapRec), nchars) )
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goto ErrExit;
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goto Exit;
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FT_TRACE2(( "gf_load_font: Allocated bitmap table\n" ));
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for (i = 0; i < nchars; i++)
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go->bm_table[i].bitmap = NULL;
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@ -446,41 +463,38 @@ unsigned char bit_table[] = {
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ptr = READ_INT4( stream );
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break;
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default:
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FT_ERROR(( "gf_load_font: missing character locators in postamble\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto ErrExit;
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goto Exit;
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}
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/* optr = ft_ftell(fp); */
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optr = stream->pos;
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/* ft_fseek(fp, ptr, SEEK_SET); */
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if( FT_STREAM_SEEK( ptr ) )
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goto ErrExit;
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goto Exit;
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bm = &go->bm_table[code - bc];
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if (gf_read_glyph( stream, bm, memory ) < 0)
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goto ErrExit;
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goto Exit;
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bm->mv_x = dx;
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bm->mv_y = dy;
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/* ft_fseek(fp, optr, SEEK_SET); */
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if(FT_STREAM_SEEK( optr ))
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goto ErrExit;
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goto Exit;
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}
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*goptr = go;
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return error;
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ErrExit:
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Exit:
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printf("*ERROR\n");
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if (go != NULL)
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{
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if (go->bm_table != NULL)
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{
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for (i = 0; i < nchars; i++){}
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/* FT_FREE(go->bm_table[i].bitmap); */
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}
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/* FT_FREE(go->bm_table); */
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FT_FREE(go->bm_table);
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FT_FREE(go);
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}
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/* FT_FREE(go); */
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return error;
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}
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@ -490,7 +504,11 @@ unsigned char bit_table[] = {
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GF_Face gf = (GF_Face)gfface;
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GF_Glyph go;
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go = gf->gf_glyph;
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if (go != NULL)
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{
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FT_FREE(go->bm_table);
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FT_FREE(go);
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}
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}
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@ -16,7 +16,7 @@ FTMODULE_H_COMMANDS += GF_DRIVER
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define GF_DRIVER
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$(OPEN_DRIVER) FT_Driver_ClassRec, gf_driver_class $(CLOSE_DRIVER)
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$(ECHO_DRIVER)gf $(ECHO_DRIVER_DESC)gf TeX's bitmap fonts$(ECHO_DRIVER_DONE)
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$(ECHO_DRIVER)gf $(ECHO_DRIVER_DESC)METAFONT bitmap fonts$(ECHO_DRIVER_DONE)
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endef
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# EOF
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