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Diffstat (limited to 'pdf/pdf_parse.c')
-rw-r--r--pdf/pdf_parse.c244
1 files changed, 124 insertions, 120 deletions
diff --git a/pdf/pdf_parse.c b/pdf/pdf_parse.c
index abbac2c6..e01734d7 100644
--- a/pdf/pdf_parse.c
+++ b/pdf/pdf_parse.c
@@ -2,13 +2,13 @@
#include "mupdf.h"
fz_rect
-pdf_to_rect(fz_obj *array)
+pdf_to_rect(fz_context *ctx, fz_obj *array)
{
fz_rect r;
- float a = fz_to_real(fz_array_get(array, 0));
- float b = fz_to_real(fz_array_get(array, 1));
- float c = fz_to_real(fz_array_get(array, 2));
- float d = fz_to_real(fz_array_get(array, 3));
+ float a = fz_to_real(ctx, fz_array_get(ctx, array, 0));
+ float b = fz_to_real(ctx, fz_array_get(ctx, array, 1));
+ float c = fz_to_real(ctx, fz_array_get(ctx, array, 2));
+ float d = fz_to_real(ctx, fz_array_get(ctx, array, 3));
r.x0 = MIN(a, c);
r.y0 = MIN(b, d);
r.x1 = MAX(a, c);
@@ -17,25 +17,25 @@ pdf_to_rect(fz_obj *array)
}
fz_matrix
-pdf_to_matrix(fz_obj *array)
+pdf_to_matrix(fz_context *ctx, fz_obj *array)
{
fz_matrix m;
- m.a = fz_to_real(fz_array_get(array, 0));
- m.b = fz_to_real(fz_array_get(array, 1));
- m.c = fz_to_real(fz_array_get(array, 2));
- m.d = fz_to_real(fz_array_get(array, 3));
- m.e = fz_to_real(fz_array_get(array, 4));
- m.f = fz_to_real(fz_array_get(array, 5));
+ m.a = fz_to_real(ctx, fz_array_get(ctx, array, 0));
+ m.b = fz_to_real(ctx, fz_array_get(ctx, array, 1));
+ m.c = fz_to_real(ctx, fz_array_get(ctx, array, 2));
+ m.d = fz_to_real(ctx, fz_array_get(ctx, array, 3));
+ m.e = fz_to_real(ctx, fz_array_get(ctx, array, 4));
+ m.f = fz_to_real(ctx, fz_array_get(ctx, array, 5));
return m;
}
/* Convert Unicode/PdfDocEncoding string into utf-8 */
char *
-pdf_to_utf8(fz_obj *src)
+pdf_to_utf8(fz_context *ctx, fz_obj *src)
{
- unsigned char *srcptr = (unsigned char *) fz_to_str_buf(src);
+ unsigned char *srcptr = (unsigned char *) fz_to_str_buf(ctx, src);
char *dstptr, *dst;
- int srclen = fz_to_str_len(src);
+ int srclen = fz_to_str_len(ctx, src);
int dstlen = 0;
int ucs;
int i;
@@ -48,7 +48,7 @@ pdf_to_utf8(fz_obj *src)
dstlen += runelen(ucs);
}
- dstptr = dst = fz_malloc(dstlen + 1);
+ dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 2; i < srclen; i += 2)
{
@@ -64,7 +64,7 @@ pdf_to_utf8(fz_obj *src)
dstlen += runelen(ucs);
}
- dstptr = dst = fz_malloc(dstlen + 1);
+ dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 2; i + 1 < srclen; i += 2)
{
@@ -77,7 +77,7 @@ pdf_to_utf8(fz_obj *src)
for (i = 0; i < srclen; i++)
dstlen += runelen(pdf_doc_encoding[srcptr[i]]);
- dstptr = dst = fz_malloc(dstlen + 1);
+ dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 0; i < srclen; i++)
{
@@ -92,28 +92,28 @@ pdf_to_utf8(fz_obj *src)
/* Convert Unicode/PdfDocEncoding string into ucs-2 */
unsigned short *
-pdf_to_ucs2(fz_obj *src)
+pdf_to_ucs2(fz_context *ctx, fz_obj *src)
{
- unsigned char *srcptr = (unsigned char *) fz_to_str_buf(src);
+ unsigned char *srcptr = (unsigned char *) fz_to_str_buf(ctx, src);
unsigned short *dstptr, *dst;
- int srclen = fz_to_str_len(src);
+ int srclen = fz_to_str_len(ctx, src);
int i;
if (srclen >= 2 && srcptr[0] == 254 && srcptr[1] == 255)
{
- dstptr = dst = fz_calloc((srclen - 2) / 2 + 1, sizeof(short));
+ dstptr = dst = fz_calloc(ctx, (srclen - 2) / 2 + 1, sizeof(short));
for (i = 2; i + 1 < srclen; i += 2)
*dstptr++ = srcptr[i] << 8 | srcptr[i+1];
}
else if (srclen >= 2 && srcptr[0] == 255 && srcptr[1] == 254)
{
- dstptr = dst = fz_calloc((srclen - 2) / 2 + 1, sizeof(short));
+ dstptr = dst = fz_calloc(ctx, (srclen - 2) / 2 + 1, sizeof(short));
for (i = 2; i + 1 < srclen; i += 2)
*dstptr++ = srcptr[i] | srcptr[i+1] << 8;
}
else
{
- dstptr = dst = fz_calloc(srclen + 1, sizeof(short));
+ dstptr = dst = fz_calloc(ctx, srclen + 1, sizeof(short));
for (i = 0; i < srclen; i++)
*dstptr++ = pdf_doc_encoding[srcptr[i]];
}
@@ -124,7 +124,7 @@ pdf_to_ucs2(fz_obj *src)
/* Convert UCS-2 string into PdfDocEncoding for authentication */
char *
-pdf_from_ucs2(unsigned short *src)
+pdf_from_ucs2(fz_context *ctx, unsigned short *src)
{
int i, j, len;
char *docstr;
@@ -133,7 +133,7 @@ pdf_from_ucs2(unsigned short *src)
while (src[len])
len++;
- docstr = fz_malloc(len + 1);
+ docstr = fz_malloc(ctx, len + 1);
for (i = 0; i < len; i++)
{
@@ -152,7 +152,7 @@ pdf_from_ucs2(unsigned short *src)
/* fail, if a character can't be encoded */
if (!docstr[i])
{
- fz_free(docstr);
+ fz_free(ctx, docstr);
return NULL;
}
}
@@ -162,11 +162,11 @@ pdf_from_ucs2(unsigned short *src)
}
fz_obj *
-pdf_to_utf8_name(fz_obj *src)
+pdf_to_utf8_name(fz_context *ctx, fz_obj *src)
{
- char *buf = pdf_to_utf8(src);
- fz_obj *dst = fz_new_name(buf);
- fz_free(buf);
+ char *buf = pdf_to_utf8(ctx, src);
+ fz_obj *dst = fz_new_name(ctx, buf);
+ fz_free(ctx, buf);
return dst;
}
@@ -179,15 +179,16 @@ pdf_parse_array(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int cap
int a = 0, b = 0, n = 0;
int tok;
int len;
+ fz_context *ctx = file->ctx;
- ary = fz_new_array(4);
+ ary = fz_new_array(ctx, 4);
while (1)
{
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(ary);
+ fz_drop_obj(ctx, ary);
return fz_error_note(error, "cannot parse array");
}
@@ -195,24 +196,24 @@ pdf_parse_array(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int cap
{
if (n > 0)
{
- obj = fz_new_int(a);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_int(ctx, a);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
}
if (n > 1)
{
- obj = fz_new_int(b);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_int(ctx, b);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
}
n = 0;
}
if (tok == PDF_TOK_INT && n == 2)
{
- obj = fz_new_int(a);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_int(ctx, a);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
a = b;
n --;
}
@@ -234,12 +235,12 @@ pdf_parse_array(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int cap
case PDF_TOK_R:
if (n != 2)
{
- fz_drop_obj(ary);
+ fz_drop_obj(ctx, ary);
return fz_error_make("cannot parse indirect reference in array");
}
- obj = fz_new_indirect(a, b, xref);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_indirect(ctx, a, b, xref);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
n = 0;
break;
@@ -247,57 +248,57 @@ pdf_parse_array(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int cap
error = pdf_parse_array(&obj, xref, file, buf, cap);
if (error)
{
- fz_drop_obj(ary);
+ fz_drop_obj(ctx, ary);
return fz_error_note(error, "cannot parse array");
}
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_OPEN_DICT:
error = pdf_parse_dict(&obj, xref, file, buf, cap);
if (error)
{
- fz_drop_obj(ary);
+ fz_drop_obj(ctx, ary);
return fz_error_note(error, "cannot parse array");
}
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_NAME:
- obj = fz_new_name(buf);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_name(ctx, buf);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_REAL:
- obj = fz_new_real(fz_atof(buf));
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_real(ctx, fz_atof(buf));
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_STRING:
- obj = fz_new_string(buf, len);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_string(ctx, buf, len);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_TRUE:
- obj = fz_new_bool(1);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_bool(ctx, 1);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_FALSE:
- obj = fz_new_bool(0);
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_bool(ctx, 0);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
case PDF_TOK_NULL:
- obj = fz_new_null();
- fz_array_push(ary, obj);
- fz_drop_obj(obj);
+ obj = fz_new_null(ctx);
+ fz_array_push(ctx, ary, obj);
+ fz_drop_obj(ctx, obj);
break;
default:
- fz_drop_obj(ary);
+ fz_drop_obj(ctx, ary);
return fz_error_make("cannot parse token in array");
}
}
@@ -313,15 +314,16 @@ pdf_parse_dict(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int cap)
int tok;
int len;
int a, b;
+ fz_context *ctx = file->ctx;
- dict = fz_new_dict(8);
+ dict = fz_new_dict(ctx, 8);
while (1)
{
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
@@ -341,17 +343,17 @@ skip:
if (tok != PDF_TOK_NAME)
{
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, dict);
return fz_error_make("invalid key in dict");
}
- key = fz_new_name(buf);
+ key = fz_new_name(ctx, buf);
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
@@ -361,8 +363,8 @@ skip:
error = pdf_parse_array(&val, xref, file, buf, cap);
if (error)
{
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
break;
@@ -371,18 +373,18 @@ skip:
error = pdf_parse_dict(&val, xref, file, buf, cap);
if (error)
{
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
break;
- case PDF_TOK_NAME: val = fz_new_name(buf); break;
- case PDF_TOK_REAL: val = fz_new_real(fz_atof(buf)); break;
- case PDF_TOK_STRING: val = fz_new_string(buf, len); break;
- case PDF_TOK_TRUE: val = fz_new_bool(1); break;
- case PDF_TOK_FALSE: val = fz_new_bool(0); break;
- case PDF_TOK_NULL: val = fz_new_null(); break;
+ case PDF_TOK_NAME: val = fz_new_name(ctx, buf); break;
+ case PDF_TOK_REAL: val = fz_new_real(ctx, fz_atof(buf)); break;
+ case PDF_TOK_STRING: val = fz_new_string(ctx, buf, len); break;
+ case PDF_TOK_TRUE: val = fz_new_bool(ctx, 1); break;
+ case PDF_TOK_FALSE: val = fz_new_bool(ctx, 0); break;
+ case PDF_TOK_NULL: val = fz_new_null(ctx); break;
case PDF_TOK_INT:
/* 64-bit to allow for numbers > INT_MAX and overflow */
@@ -390,17 +392,17 @@ skip:
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
if (tok == PDF_TOK_CLOSE_DICT || tok == PDF_TOK_NAME ||
(tok == PDF_TOK_KEYWORD && !strcmp(buf, "ID")))
{
- val = fz_new_int(a);
- fz_dict_put(dict, key, val);
- fz_drop_obj(val);
- fz_drop_obj(key);
+ val = fz_new_int(ctx, a);
+ fz_dict_put(ctx, dict, key, val);
+ fz_drop_obj(ctx, val);
+ fz_drop_obj(ctx, key);
goto skip;
}
if (tok == PDF_TOK_INT)
@@ -409,29 +411,29 @@ skip:
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_note(error, "cannot parse dict");
}
if (tok == PDF_TOK_R)
{
- val = fz_new_indirect(a, b, xref);
+ val = fz_new_indirect(ctx, a, b, xref);
break;
}
}
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_make("invalid indirect reference in dict");
default:
- fz_drop_obj(key);
- fz_drop_obj(dict);
+ fz_drop_obj(ctx, key);
+ fz_drop_obj(ctx, dict);
return fz_error_make("unknown token in dict");
}
- fz_dict_put(dict, key, val);
- fz_drop_obj(val);
- fz_drop_obj(key);
+ fz_dict_put(ctx, dict, key, val);
+ fz_drop_obj(ctx, val);
+ fz_drop_obj(ctx, key);
}
}
@@ -441,6 +443,7 @@ pdf_parse_stm_obj(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int c
fz_error error;
int tok;
int len;
+ fz_context *ctx = file->ctx;
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
@@ -458,13 +461,13 @@ pdf_parse_stm_obj(fz_obj **op, pdf_xref *xref, fz_stream *file, char *buf, int c
if (error)
return fz_error_note(error, "cannot parse object stream");
break;
- case PDF_TOK_NAME: *op = fz_new_name(buf); break;
- case PDF_TOK_REAL: *op = fz_new_real(fz_atof(buf)); break;
- case PDF_TOK_STRING: *op = fz_new_string(buf, len); break;
- case PDF_TOK_TRUE: *op = fz_new_bool(1); break;
- case PDF_TOK_FALSE: *op = fz_new_bool(0); break;
- case PDF_TOK_NULL: *op = fz_new_null(); break;
- case PDF_TOK_INT: *op = fz_new_int(atoi(buf)); break;
+ case PDF_TOK_NAME: *op = fz_new_name(ctx, buf); break;
+ case PDF_TOK_REAL: *op = fz_new_real(ctx, fz_atof(buf)); break;
+ case PDF_TOK_STRING: *op = fz_new_string(ctx, buf, len); break;
+ case PDF_TOK_TRUE: *op = fz_new_bool(ctx, 1); break;
+ case PDF_TOK_FALSE: *op = fz_new_bool(ctx, 0); break;
+ case PDF_TOK_NULL: *op = fz_new_null(ctx); break;
+ case PDF_TOK_INT: *op = fz_new_int(ctx, atoi(buf)); break;
default: return fz_error_make("unknown token in object stream");
}
@@ -482,6 +485,7 @@ pdf_parse_ind_obj(fz_obj **op, pdf_xref *xref,
int tok;
int len;
int a, b;
+ fz_context *ctx = file->ctx;
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
@@ -521,12 +525,12 @@ pdf_parse_ind_obj(fz_obj **op, pdf_xref *xref,
return fz_error_note(error, "cannot parse indirect object (%d %d R)", num, gen);
break;
- case PDF_TOK_NAME: obj = fz_new_name(buf); break;
- case PDF_TOK_REAL: obj = fz_new_real(fz_atof(buf)); break;
- case PDF_TOK_STRING: obj = fz_new_string(buf, len); break;
- case PDF_TOK_TRUE: obj = fz_new_bool(1); break;
- case PDF_TOK_FALSE: obj = fz_new_bool(0); break;
- case PDF_TOK_NULL: obj = fz_new_null(); break;
+ case PDF_TOK_NAME: obj = fz_new_name(ctx, buf); break;
+ case PDF_TOK_REAL: obj = fz_new_real(ctx, fz_atof(buf)); break;
+ case PDF_TOK_STRING: obj = fz_new_string(ctx, buf, len); break;
+ case PDF_TOK_TRUE: obj = fz_new_bool(ctx, 1); break;
+ case PDF_TOK_FALSE: obj = fz_new_bool(ctx, 0); break;
+ case PDF_TOK_NULL: obj = fz_new_null(ctx); break;
case PDF_TOK_INT:
a = atoi(buf);
@@ -535,7 +539,7 @@ pdf_parse_ind_obj(fz_obj **op, pdf_xref *xref,
return fz_error_note(error, "cannot parse indirect object (%d %d R)", num, gen);
if (tok == PDF_TOK_STREAM || tok == PDF_TOK_ENDOBJ)
{
- obj = fz_new_int(a);
+ obj = fz_new_int(ctx, a);
goto skip;
}
if (tok == PDF_TOK_INT)
@@ -546,14 +550,14 @@ pdf_parse_ind_obj(fz_obj **op, pdf_xref *xref,
return fz_error_note(error, "cannot parse indirect object (%d %d R)", num, gen);
if (tok == PDF_TOK_R)
{
- obj = fz_new_indirect(a, b, xref);
+ obj = fz_new_indirect(ctx, a, b, xref);
break;
}
}
return fz_error_make("expected 'R' keyword (%d %d R)", num, gen);
case PDF_TOK_ENDOBJ:
- obj = fz_new_null();
+ obj = fz_new_null(ctx);
goto skip;
default:
@@ -563,7 +567,7 @@ pdf_parse_ind_obj(fz_obj **op, pdf_xref *xref,
error = pdf_lex(&tok, file, buf, cap, &len);
if (error)
{
- fz_drop_obj(obj);
+ fz_drop_obj(ctx, obj);
return fz_error_note(error, "cannot parse indirect object (%d %d R)", num, gen);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-29 09:58:24 +0000