Sweden-Number/tools/makedep.c

422 lines
11 KiB
C

/*
* Generate include file dependencies
*
* Copyright 1996 Alexandre Julliard
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
/* Max first-level includes per file */
#define MAX_INCLUDES 124
typedef struct _INCL_FILE
{
struct _INCL_FILE *next;
char *name;
char *filename;
struct _INCL_FILE *included_by; /* file that included this one */
int included_line; /* line where this file was included */
struct _INCL_FILE *owner;
struct _INCL_FILE *files[MAX_INCLUDES];
} INCL_FILE;
static INCL_FILE *firstSrc;
static INCL_FILE *firstInclude;
typedef struct _INCL_PATH
{
struct _INCL_PATH *next;
const char *name;
} INCL_PATH;
static INCL_PATH *firstPath;
static const char *SrcDir = NULL;
static const char *OutputFileName = "Makefile";
static const char *Separator = "### Dependencies";
static const char *ProgramName;
static const char Usage[] =
"Usage: %s [options] [files]\n"
"Options:\n"
" -Idir Search for include files in directory 'dir'\n"
" -Cdir Search for source files in directory 'dir'\n"
" -fxxx Store output in file 'xxx' (default: Makefile)\n"
" -sxxx Use 'xxx' as separator (default: \"### Dependencies\")\n";
/*******************************************************************
* xmalloc
*/
static void *xmalloc( int size )
{
void *res;
if (!(res = malloc (size ? size : 1)))
{
fprintf( stderr, "%s: Virtual memory exhausted.\n", ProgramName );
exit(1);
}
return res;
}
/*******************************************************************
* xstrdup
*/
static char *xstrdup( const char *str )
{
char *res = strdup( str );
if (!res)
{
fprintf( stderr, "%s: Virtual memory exhausted.\n", ProgramName );
exit(1);
}
return res;
}
/*******************************************************************
* is_generated
*
* Test if a given file type is generated during the make process
*/
static int is_generated( const char *name )
{
static const char * const extensions[] = { ".tab.h", ".mc.rc" };
int i, len = strlen(name);
for (i = 0; i < sizeof(extensions)/sizeof(extensions[0]); i++)
{
if (len <= strlen(extensions[i])) continue;
if (!strcmp( name + len - strlen(extensions[i]), extensions[i] )) return 1;
}
return 0;
}
/*******************************************************************
* add_include_path
*
* Add a directory to the include path.
*/
static void add_include_path( const char *name )
{
INCL_PATH *path = xmalloc( sizeof(*path) );
INCL_PATH **p = &firstPath;
while (*p) p = &(*p)->next;
*p = path;
path->next = NULL;
path->name = name;
}
/*******************************************************************
* add_src_file
*
* Add a source file to the list.
*/
static INCL_FILE *add_src_file( const char *name )
{
INCL_FILE **p = &firstSrc;
INCL_FILE *file = xmalloc( sizeof(*file) );
memset( file, 0, sizeof(*file) );
file->name = xstrdup(name);
while (*p) p = &(*p)->next;
*p = file;
return file;
}
/*******************************************************************
* add_include
*
* Add an include file if it doesn't already exists.
*/
static INCL_FILE *add_include( INCL_FILE *pFile, const char *name, int line )
{
INCL_FILE **p = &firstInclude;
int pos;
for (pos = 0; pos < MAX_INCLUDES; pos++) if (!pFile->files[pos]) break;
if (pos >= MAX_INCLUDES)
{
fprintf( stderr, "%s: %s: too many included files, please fix MAX_INCLUDES\n",
ProgramName, pFile->name );
exit(1);
}
while (*p && strcmp( name, (*p)->name )) p = &(*p)->next;
if (!*p)
{
*p = xmalloc( sizeof(INCL_FILE) );
memset( *p, 0, sizeof(INCL_FILE) );
(*p)->name = xstrdup(name);
(*p)->included_by = pFile;
(*p)->included_line = line;
}
pFile->files[pos] = *p;
return *p;
}
/*******************************************************************
* open_src_file
*/
static FILE *open_src_file( INCL_FILE *pFile )
{
FILE *file;
if (SrcDir)
{
pFile->filename = xmalloc( strlen(SrcDir) + strlen(pFile->name) + 2 );
strcpy( pFile->filename, SrcDir );
strcat( pFile->filename, "/" );
strcat( pFile->filename, pFile->name );
}
else pFile->filename = xstrdup( pFile->name );
if (!(file = fopen( pFile->filename, "r" )))
{
perror( pFile->filename );
exit(1);
}
return file;
}
/*******************************************************************
* open_include_file
*/
static FILE *open_include_file( INCL_FILE *pFile )
{
FILE *file = NULL;
INCL_PATH *path;
for (path = firstPath; path; path = path->next)
{
char *filename = xmalloc(strlen(path->name) + strlen(pFile->name) + 2);
strcpy( filename, path->name );
strcat( filename, "/" );
strcat( filename, pFile->name );
if ((file = fopen( filename, "r" )))
{
pFile->filename = filename;
break;
}
free( filename );
}
if (!file)
{
if (firstPath) perror( pFile->name );
else fprintf( stderr, "%s: %s: File not found\n",
ProgramName, pFile->name );
while (pFile->included_by)
{
fprintf( stderr, " %s was first included from %s:%d\n",
pFile->name, pFile->included_by->name, pFile->included_line );
pFile = pFile->included_by;
}
exit(1);
}
return file;
}
/*******************************************************************
* parse_file
*/
static void parse_file( INCL_FILE *pFile, int src )
{
char buffer[1024];
char *include;
int line = 0;
FILE *file;
if (is_generated( pFile->name ))
{
/* file is generated during make, don't try to open it */
pFile->filename = xstrdup( pFile->name );
return;
}
file = src ? open_src_file( pFile ) : open_include_file( pFile );
while (fgets( buffer, sizeof(buffer)-1, file ))
{
char *p = buffer;
line++;
while (*p && isspace(*p)) p++;
if (*p++ != '#') continue;
while (*p && isspace(*p)) p++;
if (strncmp( p, "include", 7 )) continue;
p += 7;
while (*p && isspace(*p)) p++;
if (*p++ != '\"') continue;
include = p;
while (*p && (*p != '\"')) p++;
if (!*p)
{
fprintf( stderr, "%s:%d: Malformed #include directive\n",
pFile->filename, line );
exit(1);
}
*p = 0;
add_include( pFile, include, line );
}
fclose(file);
}
/*******************************************************************
* output_include
*/
static void output_include( FILE *file, INCL_FILE *pFile,
INCL_FILE *owner, int *column )
{
int i;
if (pFile->owner == owner) return;
pFile->owner = owner;
if (*column + strlen(pFile->filename) + 1 > 70)
{
fprintf( file, " \\\n" );
*column = 0;
}
fprintf( file, " %s", pFile->filename );
*column += strlen(pFile->filename) + 1;
for (i = 0; i < MAX_INCLUDES; i++)
if (pFile->files[i]) output_include( file, pFile->files[i],
owner, column );
}
/*******************************************************************
* output_src
*/
static void output_src( FILE *file, INCL_FILE *pFile, int *column )
{
char *obj = xstrdup( pFile->name );
char *ext = strrchr( obj, '.' );
if (ext && strchr( ext, '/' )) ext = NULL;
if (ext)
{
*ext++ = 0;
if (!strcmp( ext, "y" )) /* yacc file */
{
*column += fprintf( file, "y.tab.o: y.tab.c" );
}
else if (!strcmp( ext, "l" )) /* lex file */
{
*column += fprintf( file, "lex.yy.o: lex.yy.c" );
}
else if (!strcmp( ext, "rc" )) /* resource file */
{
*column += fprintf( file, "%s.res: %s", obj, pFile->filename );
}
else if (!strcmp( ext, "mc" )) /* message file */
{
*column += fprintf( file, "%s.mc.rc: %s", obj, pFile->filename );
}
else
{
*column += fprintf( file, "%s.o: %s", obj, pFile->filename );
}
}
free( obj );
}
/*******************************************************************
* output_dependencies
*/
static void output_dependencies(void)
{
INCL_FILE *pFile;
int i, column;
FILE *file = NULL;
char buffer[1024];
if (Separator && ((file = fopen( OutputFileName, "r+" ))))
{
while (fgets( buffer, sizeof(buffer), file ))
if (!strncmp( buffer, Separator, strlen(Separator) )) break;
ftruncate( fileno(file), ftell(file) );
fseek( file, 0L, SEEK_END );
}
if (!file)
{
if (!(file = fopen( OutputFileName, "a" )))
{
perror( OutputFileName );
exit(1);
}
}
for( pFile = firstSrc; pFile; pFile = pFile->next)
{
column = 0;
output_src( file, pFile, &column );
for (i = 0; i < MAX_INCLUDES; i++)
if (pFile->files[i]) output_include( file, pFile->files[i],
pFile, &column );
fprintf( file, "\n" );
}
fclose(file);
}
/*******************************************************************
* parse_option
*/
static void parse_option( const char *opt )
{
switch(opt[1])
{
case 'I':
if (opt[2]) add_include_path( opt + 2 );
break;
case 'C':
if (opt[2]) SrcDir = opt + 2;
else SrcDir = NULL;
break;
case 'f':
if (opt[2]) OutputFileName = opt + 2;
break;
case 's':
if (opt[2]) Separator = opt + 2;
else Separator = NULL;
break;
default:
fprintf( stderr, "Unknown option '%s'\n", opt );
fprintf( stderr, Usage, ProgramName );
exit(1);
}
}
/*******************************************************************
* main
*/
int main( int argc, char *argv[] )
{
INCL_FILE *pFile;
ProgramName = argv[0];
while (argc > 1)
{
if (*argv[1] == '-') parse_option( argv[1] );
else
{
pFile = add_src_file( argv[1] );
parse_file( pFile, 1 );
}
argc--;
argv++;
}
for (pFile = firstInclude; pFile; pFile = pFile->next)
parse_file( pFile, 0 );
output_dependencies();
return 0;
}