Sweden-Number/tools/widl/utils.c

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/*
* Utility routines
*
* Copyright 1998 Bertho A. Stultiens
* Copyright 2002 Ove Kaaven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include "widl.h"
#include "utils.h"
#include "parser.h"
#define CURRENT_LOCATION { input_name ? input_name : "stdin", line_number, parser_text }
static const int want_near_indication = 0;
static void make_print(char *str)
{
while(*str)
{
if(!isprint(*str))
*str = ' ';
str++;
}
}
static void generic_msg(const loc_info_t *loc_info, const char *s, const char *t, va_list ap)
{
fprintf(stderr, "%s:%d: %s: ", loc_info->input_name, loc_info->line_number, t);
vfprintf(stderr, s, ap);
if (want_near_indication)
{
char *cpy;
if(loc_info->near_text)
{
cpy = xstrdup(loc_info->near_text);
make_print(cpy);
fprintf(stderr, " near '%s'", cpy);
free(cpy);
}
}
}
void error_loc(const char *s, ...)
{
loc_info_t cur_loc = CURRENT_LOCATION;
va_list ap;
va_start(ap, s);
generic_msg(&cur_loc, s, "error", ap);
va_end(ap);
exit(1);
}
/* yyerror: yacc assumes this is not newline terminated. */
void parser_error(const char *s)
{
error_loc("%s\n", s);
}
void error_loc_info(const loc_info_t *loc_info, const char *s, ...)
{
va_list ap;
va_start(ap, s);
generic_msg(loc_info, s, "error", ap);
va_end(ap);
exit(1);
}
int parser_warning(const char *s, ...)
{
loc_info_t cur_loc = CURRENT_LOCATION;
va_list ap;
va_start(ap, s);
generic_msg(&cur_loc, s, "warning", ap);
va_end(ap);
return 0;
}
void error(const char *s, ...)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "error: ");
vfprintf(stderr, s, ap);
va_end(ap);
exit(2);
}
void warning(const char *s, ...)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "warning: ");
vfprintf(stderr, s, ap);
va_end(ap);
}
void warning_loc_info(const loc_info_t *loc_info, const char *s, ...)
{
va_list ap;
va_start(ap, s);
generic_msg(loc_info, s, "warning", ap);
va_end(ap);
}
void chat(const char *s, ...)
{
if(debuglevel & DEBUGLEVEL_CHAT)
{
va_list ap;
va_start(ap, s);
fprintf(stderr, "chat: ");
vfprintf(stderr, s, ap);
va_end(ap);
}
}
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size_t widl_getline(char **linep, size_t *lenp, FILE *fp)
{
char *line = *linep;
size_t len = *lenp;
size_t n = 0;
if (!line)
{
len = 64;
line = xmalloc(len);
}
while (fgets(&line[n], len - n, fp))
{
n += strlen(&line[n]);
if (line[n - 1] == '\n')
break;
else if (n == len - 1)
{
len *= 2;
line = xrealloc(line, len);
}
}
*linep = line;
*lenp = len;
return n;
}
size_t strappend(char **buf, size_t *len, size_t pos, const char* fmt, ...)
{
size_t size;
va_list ap;
char *ptr;
int n;
assert( buf && len );
assert( (*len == 0 && *buf == NULL) || (*len != 0 && *buf != NULL) );
if (*buf)
{
size = *len;
ptr = *buf;
}
else
{
size = 100;
ptr = xmalloc( size );
}
for (;;)
{
va_start( ap, fmt );
n = vsnprintf( ptr + pos, size - pos, fmt, ap );
va_end( ap );
if (n == -1) size *= 2;
else if (pos + (size_t)n >= size) size = pos + n + 1;
else break;
ptr = xrealloc( ptr, size );
}
*len = size;
*buf = ptr;
return n;
}
/*******************************************************************
* buffer management
*
* Function for writing to a memory buffer.
*/
unsigned char *output_buffer;
size_t output_buffer_pos;
size_t output_buffer_size;
static struct resource
{
unsigned char *data;
size_t size;
} resources[16];
static unsigned int nb_resources;
static void check_output_buffer_space( size_t size )
{
if (output_buffer_pos + size >= output_buffer_size)
{
output_buffer_size = max( output_buffer_size * 2, output_buffer_pos + size );
output_buffer = xrealloc( output_buffer, output_buffer_size );
}
}
void init_output_buffer(void)
{
output_buffer_size = 1024;
output_buffer_pos = 0;
output_buffer = xmalloc( output_buffer_size );
}
void flush_output_buffer( const char *name )
{
int fd = open( name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666 );
if (fd == -1) error( "Error creating %s\n", name );
if (write( fd, output_buffer, output_buffer_pos ) != output_buffer_pos)
error( "Error writing to %s\n", name );
close( fd );
free( output_buffer );
}
static inline void put_resource_id( const char *str )
{
if (str[0] != '#')
{
while (*str)
{
unsigned char ch = *str++;
put_word( toupper(ch) );
}
put_word( 0 );
}
else
{
put_word( 0xffff );
put_word( atoi( str + 1 ));
}
}
void add_output_to_resources( const char *type, const char *name )
{
size_t data_size = output_buffer_pos;
size_t header_size = 5 * sizeof(unsigned int) + 2 * sizeof(unsigned short);
assert( nb_resources < ARRAY_SIZE( resources ));
if (type[0] != '#') header_size += (strlen( type ) + 1) * sizeof(unsigned short);
else header_size += 2 * sizeof(unsigned short);
if (name[0] != '#') header_size += (strlen( name ) + 1) * sizeof(unsigned short);
else header_size += 2 * sizeof(unsigned short);
header_size = (header_size + 3) & ~3;
align_output( 4 );
check_output_buffer_space( header_size );
resources[nb_resources].size = header_size + output_buffer_pos;
memmove( output_buffer + header_size, output_buffer, output_buffer_pos );
output_buffer_pos = 0;
put_dword( data_size ); /* ResSize */
put_dword( header_size ); /* HeaderSize */
put_resource_id( type ); /* ResType */
put_resource_id( name ); /* ResName */
align_output( 4 );
put_dword( 0 ); /* DataVersion */
put_word( 0 ); /* Memory options */
put_word( 0 ); /* Language */
put_dword( 0 ); /* Version */
put_dword( 0 ); /* Characteristics */
resources[nb_resources++].data = output_buffer;
init_output_buffer();
}
void flush_output_resources( const char *name )
{
int fd;
unsigned int i;
/* all output must have been saved with add_output_to_resources() first */
assert( !output_buffer_pos );
put_dword( 0 ); /* ResSize */
put_dword( 32 ); /* HeaderSize */
put_word( 0xffff ); /* ResType */
put_word( 0x0000 );
put_word( 0xffff ); /* ResName */
put_word( 0x0000 );
put_dword( 0 ); /* DataVersion */
put_word( 0 ); /* Memory options */
put_word( 0 ); /* Language */
put_dword( 0 ); /* Version */
put_dword( 0 ); /* Characteristics */
fd = open( name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666 );
if (fd == -1) error( "Error creating %s\n", name );
if (write( fd, output_buffer, output_buffer_pos ) != output_buffer_pos)
error( "Error writing to %s\n", name );
for (i = 0; i < nb_resources; i++)
{
if (write( fd, resources[i].data, resources[i].size ) != resources[i].size)
error( "Error writing to %s\n", name );
free( resources[i].data );
}
close( fd );
nb_resources = 0;
free( output_buffer );
}
void put_data( const void *data, size_t size )
{
check_output_buffer_space( size );
memcpy( output_buffer + output_buffer_pos, data, size );
output_buffer_pos += size;
}
void put_byte( unsigned char val )
{
check_output_buffer_space( 1 );
output_buffer[output_buffer_pos++] = val;
}
void put_word( unsigned short val )
{
check_output_buffer_space( 2 );
output_buffer[output_buffer_pos++] = val;
output_buffer[output_buffer_pos++] = val >> 8;
}
void put_dword( unsigned int val )
{
check_output_buffer_space( 4 );
output_buffer[output_buffer_pos++] = val;
output_buffer[output_buffer_pos++] = val >> 8;
output_buffer[output_buffer_pos++] = val >> 16;
output_buffer[output_buffer_pos++] = val >> 24;
}
void put_qword( unsigned int val )
{
put_dword( val );
put_dword( 0 );
}
/* pointer-sized word */
void put_pword( unsigned int val )
{
if (pointer_size == 8) put_qword( val );
else put_dword( val );
}
void put_str( int indent, const char *format, ... )
{
int n;
va_list args;
check_output_buffer_space( 4 * indent );
memset( output_buffer + output_buffer_pos, ' ', 4 * indent );
output_buffer_pos += 4 * indent;
for (;;)
{
size_t size = output_buffer_size - output_buffer_pos;
va_start( args, format );
n = vsnprintf( (char *)output_buffer + output_buffer_pos, size, format, args );
va_end( args );
if (n == -1) size *= 2;
else if ((size_t)n >= size) size = n + 1;
else
{
output_buffer_pos += n;
return;
}
check_output_buffer_space( size );
}
}
void align_output( unsigned int align )
{
size_t size = align - (output_buffer_pos % align);
if (size == align) return;
check_output_buffer_space( size );
memset( output_buffer + output_buffer_pos, 0, size );
output_buffer_pos += size;
}