ref: 653ead574230a4458e55eeee9d863abc9d73e09f
parent: 2ca3c0076b48c7f40b457fff027388e2329281c8
author: Sebastian Rasmussen <sebras@gmail.com>
date: Tue Jun 19 19:16:17 EDT 2018
jbig2dec: Remove untested, incomplete metadata handling.
--- a/Makefile.am
+++ b/Makefile.am
@@ -21,7 +21,7 @@
jbig2_arith.h jbig2_arith_iaid.h jbig2_arith_int.h \
jbig2_huffman.h jbig2_hufftab.h jbig2_mmr.h \
jbig2_generic.h jbig2_symbol_dict.h jbig2_text.h \
- jbig2_metadata.c jbig2_metadata.h memento.c memento.h
+ memento.c memento.h
bin_PROGRAMS = jbig2dec
noinst_PROGRAMS = test_sha1 test_huffman test_arith
--- a/Makefile.unix
+++ b/Makefile.unix
@@ -10,13 +10,12 @@
jbig2_arith.c jbig2_arith_int.c jbig2_arith_iaid.c \
jbig2_huffman.c jbig2_segment.c jbig2_page.c jbig2_symbol_dict.c \
jbig2_text.c jbig2_halftone.c jbig2_generic.c jbig2_refinement.c \
- jbig2_mmr.c jbig2_image.c jbig2_metadata.c jbig2.c
+ jbig2_mmr.c jbig2_image.c jbig2.c
LIB_OBJS := $(LIB_SRCS:%.c=%.o)
LIB_HDRS := \
jbig2.h jbig2_arith.h jbig2_arith_iaid.h jbig2_arith_int.h \
jbig2_generic.h jbig2_huffman.h jbig2_hufftab.h jbig2_image.h \
- jbig2_metadata.h jbig2_mmr.h jbig2_priv.h jbig2_symbol_dict.h \
- jbig2_text.h os_types.h
+ jbig2_mmr.h jbig2_priv.h jbig2_symbol_dict.h jbig2_text.h os_types.h
APP_SRCS := jbig2_image_pbm.c jbig2_image_png.c jbig2dec.c sha1.c
APP_OBJS := $(APP_SRCS:%.c=%.o)
--- a/jbig2_metadata.c
+++ /dev/null
@@ -1,190 +1,0 @@
-/* Copyright (C) 2001-2018 Artifex Software, Inc.
- All Rights Reserved.
-
- This software is provided AS-IS with no warranty, either express or
- implied.
-
- This software is distributed under license and may not be copied,
- modified or distributed except as expressly authorized under the terms
- of the license contained in the file LICENSE in this distribution.
-
- Refer to licensing information at http://www.artifex.com or contact
- Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
- CA 94945, U.S.A., +1(415)492-9861, for further information.
-*/
-
-/*
- jbig2dec
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include "os_types.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "jbig2.h"
-#include "jbig2_priv.h"
-#include "jbig2_metadata.h"
-#include "jbig2_image.h"
-#include "jbig2_segment.h"
-
-/* metadata key,value list object */
-Jbig2Metadata *
-jbig2_metadata_new(Jbig2Ctx *ctx, Jbig2Encoding encoding)
-{- Jbig2Metadata *md = jbig2_new(ctx, Jbig2Metadata, 1);
-
- if (md != NULL) {- md->encoding = encoding;
- md->entries = 0;
- md->max_entries = 4;
- md->keys = jbig2_new(ctx, char *, md->max_entries);
- md->values = jbig2_new(ctx, char *, md->max_entries);
-
- if (md->keys == NULL || md->values == NULL) {- jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "failed to allocate storage for metadata keys/values");
- jbig2_metadata_free(ctx, md);
- md = NULL;
- }
- } else {- jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "failed to allocate storage for metadata");
- }
- return md;
-}
-
-void
-jbig2_metadata_free(Jbig2Ctx *ctx, Jbig2Metadata *md)
-{- int i;
-
- if (md == NULL)
- return;
-
- if (md->keys) {- /* assume we own the pointers */
- for (i = 0; i < md->entries; i++)
- jbig2_free(ctx->allocator, md->keys[i]);
- jbig2_free(ctx->allocator, md->keys);
- }
- if (md->values) {- for (i = 0; i < md->entries; i++)
- jbig2_free(ctx->allocator, md->values[i]);
- jbig2_free(ctx->allocator, md->values);
- }
- jbig2_free(ctx->allocator, md);
-}
-
-static char *
-jbig2_strndup(Jbig2Ctx *ctx, const char *c, const int len)
-{- char *s = jbig2_new(ctx, char, len);
-
- if (s == NULL) {- jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "unable to duplicate comment string");
- } else {- memcpy(s, c, len);
- }
- return s;
-}
-
-static int
-jbig2_metadata_add(Jbig2Ctx *ctx, Jbig2Metadata *md, const char *key, const int key_length, const char *value, const int value_length)
-{- char **keys, **values;
-
- /* grow the array if necessary */
- if (md->entries == md->max_entries) {- md->max_entries <<= 1;
- keys = jbig2_renew(ctx, md->keys, char *, md->max_entries);
- values = jbig2_renew(ctx, md->values, char *, md->max_entries);
-
- if (keys == NULL || values == NULL)
- return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "unable to resize metadata structure");
- md->keys = keys;
- md->values = values;
- }
-
- /* copy the passed key,value pair */
- md->keys[md->entries] = jbig2_strndup(ctx, key, key_length);
- md->values[md->entries] = jbig2_strndup(ctx, value, value_length);
- if (md->keys[md->entries] == NULL || md->values[md->entries] == NULL) {- return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "unable to accommodate more metadata");
- }
- md->entries++;
-
- return 0;
-}
-
-/* decode an ascii comment segment 7.4.15.1 */
-int
-jbig2_comment_ascii(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data)
-{- char *s, *end;
- Jbig2Metadata *comment;
- char *key, *value;
- int code;
- char *p;
-
- jbig2_error(ctx, JBIG2_SEVERITY_INFO, segment->number, "ASCII comment data");
-
- s = (char *)(segment_data + 4);
- end = (char *)(segment_data + segment->data_length);
-
- comment = jbig2_metadata_new(ctx, JBIG2_ENCODING_ASCII);
- if (comment == NULL)
- return jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "unable to allocate comment structure");
-
- /* loop over the segment data pulling out the key,value pairs */
- while (s < end && *s) {- key = s;
- value = memchr(key, '\0', end - key);
- if (!value)
- goto too_short;
- value++;
- s = memchr(value, '\0', end - value);
- if (!s)
- goto too_short;
- s++;
-
- p = key;
- while (*p) {- if (*p > 127)
- goto invalid_character;
- p++;
- }
- p = value;
- while (*p) {- if (*p > 127)
- goto invalid_character;
- p++;
- }
-
- code = jbig2_metadata_add(ctx, comment, key, value - key, value, s - value);
- if (code < 0)
- return jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "unable to add ascii comment data");
- jbig2_error(ctx, JBIG2_SEVERITY_INFO, segment->number, "'%s'\t'%s'", key, value);
- }
-
- /* TODO: associate with ctx, page, or referred-to segment(s) */
- segment->result = comment;
-
- return 0;
-
-too_short:
- jbig2_metadata_free(ctx, comment);
- return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "unexpected end of comment segment");
-
-invalid_character:
- jbig2_metadata_free(ctx, comment);
- return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "invalid character 0x%02x found in ASCII comment", *p);
-}
-
-/* decode a UCS-16 comment segment 7.4.15.2 */
-int
-jbig2_comment_unicode(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data)
-{- return jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "unhandled unicode comment segment");
-}
--- a/jbig2_metadata.h
+++ /dev/null
@@ -1,46 +1,0 @@
-/* Copyright (C) 2001-2018 Artifex Software, Inc.
- All Rights Reserved.
-
- This software is provided AS-IS with no warranty, either express or
- implied.
-
- This software is distributed under license and may not be copied,
- modified or distributed except as expressly authorized under the terms
- of the license contained in the file LICENSE in this distribution.
-
- Refer to licensing information at http://www.artifex.com or contact
- Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
- CA 94945, U.S.A., +1(415)492-9861, for further information.
-*/
-
-/*
- jbig2dec
-*/
-
-#ifndef _JBIG2_METADATA_H
-#define _JBIG2_METADATA_H
-
-/* metadata from extension segments */
-
-/* these bits should be moved to jbig2.h for public access */
-typedef enum {- JBIG2_ENCODING_ASCII,
- JBIG2_ENCODING_UCS16
-} Jbig2Encoding;
-
-typedef struct _Jbig2Metadata Jbig2Metadata;
-
-Jbig2Metadata *jbig2_metadata_new(Jbig2Ctx *ctx, Jbig2Encoding encoding);
-void jbig2_metadata_free(Jbig2Ctx *ctx, Jbig2Metadata *md);
-
-struct _Jbig2Metadata {- Jbig2Encoding encoding;
- char **keys, * *values;
- int entries, max_entries;
-};
-
-/* these bits can go to jbig2_priv.h */
-int jbig2_comment_ascii(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
-int jbig2_comment_unicode(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
-
-#endif /* _JBIG2_METADATA_H */
--- a/jbig2_segment.c
+++ b/jbig2_segment.c
@@ -33,7 +33,6 @@
#include "jbig2_image.h"
#include "jbig2_halftone.h"
#include "jbig2_huffman.h"
-#include "jbig2_metadata.h"
#include "jbig2_page.h"
#include "jbig2_refinement.h"
#include "jbig2_segment.h"
@@ -159,10 +158,6 @@
if (segment->result != NULL)
jbig2_table_free(ctx, (Jbig2HuffmanParams *) segment->result);
break;
- case 62:
- if (segment->result != NULL)
- jbig2_metadata_free(ctx, (Jbig2Metadata *) segment->result);
- break;
default:
/* anything else is probably an undefined pointer */
break;
@@ -229,9 +224,11 @@
switch (type) {case 0x20000000:
- return jbig2_comment_ascii(ctx, segment, segment_data);
+ jbig2_error(ctx, JBIG2_SEVERITY_INFO, segment->number, "ignoring ASCII comment");
+ break;
case 0x20000002:
- return jbig2_comment_unicode(ctx, segment, segment_data);
+ jbig2_error(ctx, JBIG2_SEVERITY_INFO, segment->number, "ignoring UCS-2 comment");
+ break;
default:
if (necessary) {return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "unhandled necessary extension segment type 0x%08x", type);
@@ -239,6 +236,8 @@
return jbig2_error(ctx, JBIG2_SEVERITY_WARNING, segment->number, "unhandled extension segment");
}
}
+
+ return 0;
}
/* dispatch code for profile segment parsing */
--- a/msvc.mak
+++ b/msvc.mak
@@ -45,13 +45,11 @@
jbig2_generic$(OBJ) jbig2_refinement$(OBJ) jbig2_halftone$(OBJ)\
jbig2_image$(OBJ) jbig2_image_pbm$(OBJ) $(JBIG2_IMAGE_PNG_OBJ) \
jbig2_segment$(OBJ) jbig2_symbol_dict$(OBJ) jbig2_text$(OBJ) \
- jbig2_mmr$(OBJ) jbig2_page$(OBJ) jbig2_metadata$(OBJ) \
- jbig2dec$(OBJ) sha1$(OBJ)
+ jbig2_mmr$(OBJ) jbig2_page$(OBJ) jbig2dec$(OBJ) sha1$(OBJ)
HDRS=getopt.h jbig2.h jbig2_arith.h jbig2_arith_iaid.h jbig2_arith_int.h \
jbig2_generic.h jbig2_huffman.h jbig2_hufftab.h jbig2_image.h \
- jbig2_mmr.h jbig2_priv.h jbig2_symbol_dict.h jbig2_metadata.h \
- config_win32.h sha1.h
+ jbig2_mmr.h jbig2_priv.h jbig2_symbol_dict.h config_win32.h sha1.h
all: jbig2dec$(EXE)
@@ -111,9 +109,6 @@
jbig2_text$(OBJ): jbig2_text.c $(HDRS)
$(CC) $(CFLAGS) -c jbig2_text.c
-
-jbig2_metadata$(OBJ): jbig2_metadata.c $(HDRS)
- $(CC) $(CFLAGS) -c jbig2_metadata.c
jbig2dec$(OBJ): jbig2dec.c $(HDRS)
$(CC) $(CFLAGS) -c jbig2dec.c