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winebuild: Add helper functions for reading binary data from a file.

This commit is contained in:
Alexandre Julliard 2009-08-14 13:22:26 +02:00
parent 7447145d64
commit b935cc210c
4 changed files with 116 additions and 138 deletions
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13
tools/winebuild/build.h
View File

@ -263,6 +263,19 @@ extern void add_16bit_exports( DLLSPEC *spec32, DLLSPEC *spec16 );
extern int parse_spec_file( FILE *file, DLLSPEC *spec );
extern int parse_def_file( FILE *file, DLLSPEC *spec );
/* buffer management */
extern int byte_swapped;
extern const char *input_buffer_filename;
extern const unsigned char *input_buffer;
extern size_t input_buffer_pos;
extern size_t input_buffer_size;
extern void init_input_buffer( const char *file );
extern unsigned char get_byte(void);
extern unsigned short get_word(void);
extern unsigned int get_dword(void);
/* global variables */
extern int current_line;

85
tools/winebuild/res16.c
View File

@ -31,12 +31,6 @@
# include <sys/types.h>
#endif
#include <fcntl.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "build.h"
@ -72,10 +66,6 @@ struct res_tree
unsigned int nb_types; /* total number of types */
};
static const unsigned char *file_pos; /* current position in resource file */
static const unsigned char *file_end; /* end of resource file */
static const char *file_name; /* current resource file name */
static inline struct resource *add_resource( DLLSPEC *spec )
{
@ -94,56 +84,21 @@ static struct res_type *add_type( struct res_tree *tree, const struct resource *
return type;
}
/* get the next byte from the current resource file */
static unsigned char get_byte(void)
{
unsigned char ret = *file_pos++;
if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
return ret;
}
/* get the next word from the current resource file */
static unsigned short get_word(void)
{
/* might not be aligned */
#ifdef WORDS_BIGENDIAN
unsigned char high = get_byte();
unsigned char low = get_byte();
#else
unsigned char low = get_byte();
unsigned char high = get_byte();
#endif
return low | (high << 8);
}
/* get the next dword from the current resource file */
static unsigned int get_dword(void)
{
#ifdef WORDS_BIGENDIAN
unsigned short high = get_word();
unsigned short low = get_word();
#else
unsigned short low = get_word();
unsigned short high = get_word();
#endif
return low | (high << 16);
}
/* get a string from the current resource file */
static void get_string( struct string_id *str )
{
if (*file_pos == 0xff)
unsigned char c = get_byte();
if (c == 0xff)
{
get_byte(); /* skip the 0xff */
str->str = NULL;
str->id = get_word();
}
else
{
char *p = xmalloc(strlen((const char *)file_pos) + 1);
str->str = p;
str->str = (char *)input_buffer + input_buffer_pos - 1;
str->id = 0;
while ((*p++ = get_byte()));
while (get_byte()) /* nothing */;
}
}
@ -156,35 +111,17 @@ static void load_next_resource( DLLSPEC *spec )
get_string( &res->name );
res->memopt = get_word();
res->data_size = get_dword();
res->data = file_pos;
file_pos += res->data_size;
if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
res->data = input_buffer + input_buffer_pos;
input_buffer_pos += res->data_size;
if (input_buffer_pos > input_buffer_size)
fatal_error( "%s is a truncated/corrupted file\n", input_buffer_filename );
}
/* load a Win16 .res file */
void load_res16_file( const char *name, DLLSPEC *spec )
{
int fd;
void *base;
struct stat st;
if ((fd = open( name, O_RDONLY | O_BINARY )) == -1) fatal_perror( "Cannot open %s", name );
if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", name );
if (!st.st_size) fatal_error( "%s is an empty file\n", name );
#ifdef HAVE_MMAP
if ((base = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
#endif /* HAVE_MMAP */
{
base = xmalloc( st.st_size );
if (read( fd, base, st.st_size ) != st.st_size)
fatal_error( "Cannot read %s\n", name );
}
file_name = name;
file_pos = base;
file_end = file_pos + st.st_size;
while (file_pos < file_end) load_next_resource( spec );
close (fd);
init_input_buffer( name );
while (input_buffer_pos < input_buffer_size) load_next_resource( spec );
}
/* compare two strings/ids */

83
tools/winebuild/res32.c
View File

@ -31,12 +31,6 @@
# include <sys/types.h>
#endif
#include <fcntl.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "build.h"
@ -86,11 +80,6 @@ struct res_tree
unsigned int nb_types; /* total number of types */
};
static int byte_swapped; /* whether the current resource file is byte-swapped */
static const unsigned char *file_pos; /* current position in resource file */
static const unsigned char *file_end; /* end of resource file */
static const char *file_name; /* current resource file name */
static unsigned char *file_out_pos; /* current position in output resource file */
static unsigned char *file_out_end; /* end of output buffer */
@ -144,42 +133,22 @@ static struct res_type *add_type( struct res_tree *tree, const struct resource *
return type;
}
/* get the next word from the current resource file */
static unsigned short get_word(void)
{
unsigned short ret = *(const unsigned short *)file_pos;
if (byte_swapped) ret = (ret << 8) | (ret >> 8);
file_pos += sizeof(unsigned short);
if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name );
return ret;
}
/* get the next dword from the current resource file */
static unsigned int get_dword(void)
{
unsigned int ret = *(const unsigned int *)file_pos;
if (byte_swapped)
ret = ((ret << 24) | ((ret << 8) & 0x00ff0000) | ((ret >> 8) & 0x0000ff00) | (ret >> 24));
file_pos += sizeof(unsigned int);
if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name );
return ret;
}
/* get a string from the current resource file */
static void get_string( struct string_id *str )
{
if (*(const WCHAR *)file_pos == 0xffff)
WCHAR wc = get_word();
if (wc == 0xffff)
{
get_word(); /* skip the 0xffff */
str->str = NULL;
str->id = get_word();
}
else
{
WCHAR *p = xmalloc( (strlenW((const WCHAR*)file_pos) + 1) * sizeof(WCHAR) );
WCHAR *p = xmalloc( (strlenW( (const WCHAR *)(input_buffer + input_buffer_pos) - 1) + 1) * sizeof(WCHAR) );
str->str = p;
str->id = 0;
while ((*p++ = get_word()));
if ((*p++ = wc)) while ((*p++ = get_word()));
}
}
@ -225,8 +194,9 @@ static void dump_res_data( const struct resource *res )
if (!size) return;
file_pos = res->data;
file_end = (const unsigned char *)res->data + size;
input_buffer = res->data;
input_buffer_pos = 0;
input_buffer_size = size;
output( "\t.long " );
while (size > 4)
@ -237,7 +207,7 @@ static void dump_res_data( const struct resource *res )
}
output( "0x%08x\n", get_dword() );
size -= 4;
assert( file_pos == file_end );
assert( input_buffer_pos == input_buffer_size );
}
/* check the file header */
@ -268,50 +238,35 @@ static void load_next_resource( DLLSPEC *spec )
res->data_size = get_dword();
hdr_size = get_dword();
if (hdr_size & 3) fatal_error( "%s header size not aligned\n", file_name );
if (hdr_size & 3) fatal_error( "%s header size not aligned\n", input_buffer_filename );
res->data = file_pos - 2*sizeof(unsigned int) + hdr_size;
res->data = input_buffer + input_buffer_pos - 2*sizeof(unsigned int) + hdr_size;
get_string( &res->type );
get_string( &res->name );
if ((unsigned long)file_pos & 2) get_word(); /* align to dword boundary */
if (input_buffer_pos & 2) get_word(); /* align to dword boundary */
get_dword(); /* skip data version */
res->mem_options = get_word();
res->lang = get_word();
get_dword(); /* skip version */
get_dword(); /* skip characteristics */
file_pos = (const unsigned char *)res->data + ((res->data_size + 3) & ~3);
if (file_pos > file_end) fatal_error( "%s is a truncated file\n", file_name );
input_buffer_pos = ((const unsigned char *)res->data - input_buffer) + ((res->data_size + 3) & ~3);
input_buffer_pos = (input_buffer_pos + 3) & ~3;
if (input_buffer_pos > input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
}
/* load a Win32 .res file */
int load_res32_file( const char *name, DLLSPEC *spec )
{
int fd, ret;
void *base;
struct stat st;
int ret;
if ((fd = open( name, O_RDONLY | O_BINARY )) == -1) fatal_perror( "Cannot open %s", name );
if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", name );
if (!st.st_size) fatal_error( "%s is an empty file\n", name );
#ifdef HAVE_MMAP
if ((base = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
#endif /* HAVE_MMAP */
{
base = xmalloc( st.st_size );
if (read( fd, base, st.st_size ) != st.st_size)
fatal_error( "Cannot read %s\n", name );
}
init_input_buffer( name );
byte_swapped = 0;
file_name = name;
file_pos = base;
file_end = file_pos + st.st_size;
if ((ret = check_header()))
{
while (file_pos < file_end) load_next_resource( spec );
while (input_buffer_pos < input_buffer_size) load_next_resource( spec );
}
close( fd );
return ret;
}

73
tools/winebuild/utils.c
View File

@ -30,6 +30,12 @@
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "build.h"
@ -370,6 +376,73 @@ char *get_temp_file_name( const char *prefix, const char *suffix )
return name;
}
/*******************************************************************
* buffer management
*
* Function for reading from/writing to a memory buffer.
*/
int byte_swapped = 0;
const char *input_buffer_filename;
const unsigned char *input_buffer;
size_t input_buffer_pos;
size_t input_buffer_size;
void init_input_buffer( const char *file )
{
int fd;
struct stat st;
if ((fd = open( file, O_RDONLY | O_BINARY )) == -1) fatal_perror( "Cannot open %s", file );
if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", file );
if (!st.st_size) fatal_error( "%s is an empty file\n", file );
#ifdef HAVE_MMAP
if ((input_buffer = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
#endif
{
unsigned char *buffer = xmalloc( st.st_size );
if (read( fd, buffer, st.st_size ) != st.st_size) fatal_error( "Cannot read %s\n", file );
input_buffer = buffer;
}
close( fd );
input_buffer_filename = xstrdup( file );
input_buffer_size = st.st_size;
input_buffer_pos = 0;
byte_swapped = 0;
}
unsigned char get_byte(void)
{
if (input_buffer_pos >= input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
return input_buffer[input_buffer_pos++];
}
unsigned short get_word(void)
{
unsigned short ret;
if (input_buffer_pos + sizeof(ret) > input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) );
if (byte_swapped) ret = (ret << 8) | (ret >> 8);
input_buffer_pos += sizeof(ret);
return ret;
}
unsigned int get_dword(void)
{
unsigned int ret;
if (input_buffer_pos + sizeof(ret) > input_buffer_size)
fatal_error( "%s is a truncated file\n", input_buffer_filename );
memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) );
if (byte_swapped)
ret = ((ret << 24) | ((ret << 8) & 0x00ff0000) | ((ret >> 8) & 0x0000ff00) | (ret >> 24));
input_buffer_pos += sizeof(ret);
return ret;
}
/* output a standard header for generated files */
void output_standard_file_header(void)
{