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mcpp_system.c
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mcpp_system.c
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/*-
* Copyright (c) 1998, 2002-2008 Kiyoshi Matsui <[email protected]>
* All rights reserved.
*
* Some parts of this code are derived from the public domain software
* DECUS cpp (1984,1985) written by Martin Minow.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* S Y S T E M . C
* S y s t e m D e p e n d e n t R o u t i n e s
*
* Routines dependent on O.S., compiler or compiler-driver.
* To port MCPP for the systems not yet ported, you must
* 1. specify the constants in "configed.H" or "noconfig.H",
* 2. append the system-dependent routines in this file.
*/
#include "system.H"
#include "internal.H"
#include "direct.h"
#define getcwd( buf, size) _getcwd( buf, size)
#include "sys/types.h"
#include "sys/stat.h" /* For stat() */
#if ! defined( S_ISREG)
#define S_ISREG( mode) (mode & S_IFREG)
#define S_ISDIR( mode) (mode & S_IFDIR)
#endif
#define S_IFREG _S_IFREG
#define S_IFDIR _S_IFDIR
#define stat( path, stbuf) _stat( path, stbuf)
/* Function to compare path-list */
#define stricmp( str1, str2) _stricmp( str1, str2)
#define str_case_eq( str1, str2) (stricmp( str1, str2) == 0)
/*
* PATH_DELIM is defined for the O.S. which has single byte path-delimiter.
* Note: '\\' or any other character identical to second byte of MBCHAR should
* not be used for PATH_DELIM for convenience of path-list parsing.
*/
#define PATH_DELIM '/'
#define SPECIAL_PATH_DELIM FALSE
/*
* OBJEXT is the suffix to denote "object" file.
*/
#ifndef OBJEXT
#define OBJEXT "obj"
#endif
static void def_a_macro( int opt, char * def);
/* Do a -D option */
static void chk_opts( int sflag, int trad);
/* Check consistency of options */
static void init_predefines( void);
/* Set and unset predefined macros */
static void init_std_defines( void);
/* Predefine Standard macros */
static void set_limit( void);
/* Set minimum translation limits */
static void set_pragma_op( void);
/* Set the _Pragma() operator */
static void put_info( FILEINFO * sharp_file);
/* Print compiler-specific-inf */
static char * set_files( int argc, char ** argv, char ** in_pp
, char ** out_pp);
/* Set input, output, diagnostic */
static void set_sys_dirs( int set_cplus_dir);
/* Set system-specific include dirs */
static void set_env_dirs( void);
/* Set user-defined include dirs */
static void parse_env( const char * env);
/* Parse environment variables */
static void set_a_dir( const char * dirname);
/* Append an include directory */
static char * norm_dir( const char * dirname, int framework);
/* Normalize include directory path */
static char * norm_path( const char * dir, const char * fname, int inf
, int hmap); /* Normalize pathname to compare */
static void def_macros( void);
/* Define macros specified by -D */
static void undef_macros( void);
/* Undefine macros specified by -U */
static char * md_init( const char * filename, char * output);
/* Initialize makefile dependency */
static char * md_quote( char * output);
/* 'Quote' special characters */
static int open_include( char * filename, int searchlocal, int next);
/* Open the file to include */
static int has_directory( const char * source, char * directory);
/* Get directory part of fname */
static int is_full_path( const char * path);
/* The path is absolute path list ? */
static int search_dir( char * filename, int searchlocal, int next);
/* Search the include directories */
static int open_file( const char ** dirp, const char * src_dir
, const char * filename, int local, int include_opt, int sys_frame);
/* Open a source file */
static const char * set_fname( const char * filename);
/* Remember the source filename */
static void cur_file( FILEINFO * file, FILEINFO * sharp_file, int marker);
/* Output current source file name */
static char * bsl2sl( char * filename);
/* Convert \ to / in path-list */
static int is_junk( void);
/* The directive has trailing junk? */
static void do_once( const char * fullname);
/* Process #pragma once */
static int included( const char * fullname);
/* The file has been once included? */
static void push_or_pop( int direction);
/* Push or pop a macro definition */
static void do_preprocessed( void);
/* Process preprocessed file */
static int mcpp_getopt( int argc, char * const * argv, const char * opts);
/* getopt() to prevent linking of glibc getopt */
/* for mcpp_getopt() */
static int mcpp_optind = 1;
static int mcpp_opterr = 1;
static int mcpp_optopt;
static char * mcpp_optarg;
static char cur_work_dir[ PATHMAX + 1]; /* Current working directory*/
/*
* incdir[] stores the -I directories (and the system-specific #include <...>
* directories). This is set by set_a_dir(). A trailing PATH_DELIM is
* appended if absent.
*/
static const char ** incdir; /* Include directories */
static const char ** incend; /* -> active end of incdir */
static int max_inc; /* Number of incdir[] */
typedef struct inc_list { /* List of directories or files */
char * name; /* Filename or directory-name */
size_t len; /* Length of 'name' */
} INC_LIST;
/*
* fnamelist[] stores the souce file names opened by #include directive for
* debugging information.
*/
static INC_LIST * fnamelist; /* Source file names */
static INC_LIST * fname_end; /* -> active end of fnamelist */
static int max_fnamelist; /* Number of fnamelist[] */
/* once_list[] stores the #pragma once file names. */
static INC_LIST * once_list; /* Once opened file */
static INC_LIST * once_end; /* -> active end of once_list */
static int max_once; /* Number of once_list[] */
#define INIT_NUM_INCLUDE 32 /* Initial number of incdir[] */
#define INIT_NUM_FNAMELIST 256 /* Initial number of fnamelist[] */
#define INIT_NUM_ONCE 64 /* Initial number of once_list[] */
/*
* 'search_rule' holds searching rule of #include "header.h" to search first
* before searching user specified or system-specific include directories.
* 'search_rule' is initialized to SEARCH_INIT. It can be changed by -I1, -I2
* or -I3 option. -I1 specifies CURRENT, -I2 SOURCE and -I3 both.
*/
static int search_rule = SEARCH_INIT; /* Rule to search include file */
static const int nflag = TRUE; /* Flag of -N (-undef) option */
static long std_val = -1L; /* Value of __STDC_VERSION__ or __cplusplus */
#define MAX_DEF 256
#define MAX_UNDEF (MAX_DEF/4)
static char * def_list[ MAX_DEF]; /* Macros to be defined */
static char * undef_list[ MAX_UNDEF]; /* Macros to be undefined */
static int def_cnt; /* Count of def_list */
static int undef_cnt; /* Count of undef_list */
/* sharp_filename is filename for #line line, used only in cur_file() */
static char * sharp_filename = NULL;
static const int compat_mode = 0;
/* "Compatible" mode of recursive macro expansion */
#define MAX_ARCH_LEN 16
static char arch[ MAX_ARCH_LEN]; /* -arch or -m64, -m32 options */
extern int preprocess_fullpath; // sfall
void init_system( void)
/* Initialize static variables */
{
if (sharp_filename)
free( sharp_filename);
sharp_filename = NULL;
incend = incdir = NULL;
fnamelist = once_list = NULL;
search_rule = SEARCH_INIT;
std_val = -1L;
def_cnt = undef_cnt = 0;
mcpp_optind = mcpp_opterr = 1;
}
#define OPTLISTLEN 80
void do_options(
const char* dir,
const char* def,
const char* include_dir,
const char* second_dir
)
/*
* Process command line arguments, called only at MCPP startup.
*/
{
int unset_sys_dirs;
/* Unset system-specific and site-specific include directories ? */
int set_cplus_dir; /* Set C++ include directory ? (for GCC)*/
int sflag; /* -S option or similar */
int trad; /* -traditional */
int gval, sse;
unset_sys_dirs = sflag = trad = FALSE;
arch[ 0] = 0;
gval = sse = 0;
set_cplus_dir = TRUE;
/* Get current directory for -I option and #pragma once */
getcwd( cur_work_dir, PATHMAX);
bsl2sl( cur_work_dir);
sprintf( cur_work_dir + strlen( cur_work_dir), "%c%c", PATH_DELIM, EOS);
/* Append trailing path-delimiter */
if (dir) set_a_dir(dir);
if (include_dir) set_a_dir(include_dir);
if (second_dir) set_a_dir(second_dir);
/* define macros */
if (def) def_list[def_cnt++] = (char*)def;
/* Check consistency of specified options, set some variables */
chk_opts( sflag, trad);
if (warn_level == -1) /* No -W option */
warn_level = 1; /* Default warning level */
else if (warn_level == 0xFF)
warn_level = 0; /* -W0 has high precedence */
set_env_dirs();
if (! unset_sys_dirs)
set_sys_dirs( set_cplus_dir);
}
static void def_a_macro(
int opt, /* 'D' */
char * def /* Argument of -D option */
)
/*
* Define a macro specified by -D option.
* The macro maybe either object-like or function-like (with parameter).
*/
{
DEFBUF * defp;
char * definition; /* Argument of -D option */
char * cp;
int i;
/* Convert trigraphs for the environment which need trigraphs */
definition = xmalloc( strlen( def) + 4);
strcpy( definition, def);
if ((cp = strchr( definition, '=')) != NULL) {
*cp = ' '; /* Remove the '=' */
cp = "\n"; /* Append <newline> */
} else {
cp = " 1\n"; /* With definition "1" */
}
strcat( definition, cp);
cp = definition;
while ((char_type[ *cp & UCHARMAX] & SPA) == 0)
cp++;
i = *cp;
*cp = EOS;
if ((defp = look_id( definition)) != NULL) /* Pre-defined */
undefine( definition);
*cp = i;
/* Now, save the definition. */
unget_string( definition, NULL);
do_define( FALSE, 0); /* Define a macro */
*cp = EOS;
if (str_eq( definition, "__STDC__")) {
defp = look_id( definition);
defp->nargs = DEF_NOARGS_STANDARD;
/* Restore Standard-predefinedness */
}
free( definition);
skip_nl(); /* Clear the appended <newline> */
}
static void chk_opts(
int sflag, /* Flag of Standard or post-Standard mode */
int trad /* -traditional (GCC only) */
)
/*
* Check consistency between the specified options.
* Set default value of some variables for each 'mcpp_mode'.
*/
{
if (! stdc_val)
stdc_val = STDC;
expand_init();
/* Set function pointer to macro expansion routine */
}
static void init_predefines( void)
/*
* Set or unset predefined macros.
*/
{
char tmp[ 16];
if (std_val != -1L) { /* Version is specified */
stdc_ver = std_val; /* Value of __STDC_VERSION__ */
} else {
if (! cplus_val)
stdc_ver = stdc_val ? STDC_VERSION : 0L;
}
un_predefine( TRUE);
sprintf( tmp, "%ldL", cplus_val ? cplus_val : stdc_ver);
if (stdc_ver)
look_and_install( "__STDC_VERSION__", DEF_NOARGS_STANDARD, null
, tmp);
set_limit();
stdc2 = cplus_val || stdc_ver >= 199901L;
stdc3 = (cplus_val >= 199901L) || (stdc_ver >= 199901L);
/* (cplus_val >= 199901L) makes C++ C99-compatible specs */
if (standard)
init_std_defines();
if (stdc3)
set_pragma_op();
}
static void init_std_defines( void)
/*
* For STD and POST_STD modes.
* The magic pre-defines are initialized with magic argument counts.
* expand_macro() notices this and calls the appropriate routine.
* DEF_NOARGS is one greater than the first "magic" definition.
* 'DEF_NOARGS - n' are reserved for pre-defined macros.
* __STDC_VERSION__ and __cplusplus are defined by chk_opts() and set_cplus().
*/
{
char tmp[ 16];
char timestr[ 14];
time_t tvec;
char * tstring;
look_and_install( "__LINE__", DEF_NOARGS_DYNAMIC - 1, null, "-1234567890");
/* Room for 11 chars (10 for long and 1 for '-' in case of wrap round. */
look_and_install( "__FILE__", DEF_NOARGS_DYNAMIC - 2, null, null);
/* Should be stuffed */
/* Define __DATE__, __TIME__ as present date and time. */
time( &tvec);
tstring = ctime( &tvec);
sprintf( timestr, "\"%.3s %c%c %.4s\"",
tstring + 4,
*(tstring + 8) == '0' ? ' ' : *(tstring + 8),
*(tstring + 9),
tstring + 20);
look_and_install( "__DATE__", DEF_NOARGS_DYNAMIC, null, timestr);
sprintf( timestr, "\"%.8s\"", tstring + 11);
look_and_install( "__TIME__", DEF_NOARGS_DYNAMIC, null, timestr);
if (! look_id( "__STDC_HOSTED__")) {
/*
* Some compilers, e.g. GCC older than 3.3, define this macro by
* -D option.
*/
sprintf( tmp, "%d", STDC_HOSTED);
look_and_install( "__STDC_HOSTED__", DEF_NOARGS_PREDEF, null, tmp);
}
if (cplus_val)
return;
/* Define __STDC__ as 1 or such for Standard conforming compiler. */
if (! look_id( "__STDC__")) {
sprintf( tmp, "%d", stdc_val);
look_and_install( "__STDC__", DEF_NOARGS_STANDARD, null, tmp);
}
}
#define LINE90LIMIT 32767
#define LINE_CPLUS_LIMIT 32767
static void set_limit( void)
/*
* Set the minimum translation limits specified by the Standards.
*/
{
if (cplus_val) { /* Specified by C++ 1998 Standard */
std_limits.str_len = SLEN_CPLUS_MIN;
std_limits.id_len = IDLEN_CPLUS_MIN;
std_limits.n_mac_pars = NMACPARS_CPLUS_MIN;
std_limits.exp_nest = EXP_NEST_CPLUS_MIN;
std_limits.blk_nest = BLK_NEST_CPLUS_MIN;
std_limits.inc_nest = INCLUDE_NEST_CPLUS_MIN;
std_limits.n_macro = NMACRO_CPLUS_MIN;
std_limits.line_num = LINE_CPLUS_LIMIT;
} else if (stdc_ver >= 199901L) { /* Specified by C 1999 Standard */
std_limits.str_len = SLEN99MIN;
std_limits.id_len = IDLEN99MIN;
std_limits.n_mac_pars = NMACPARS99MIN;
std_limits.exp_nest = EXP_NEST99MIN;
std_limits.blk_nest = BLK_NEST99MIN;
std_limits.inc_nest = INCLUDE_NEST99MIN;
std_limits.n_macro = NMACRO99MIN;
std_limits.line_num = LINE99LIMIT;
} else if (standard) { /* Specified by C 1990 Standard */
std_limits.str_len = SLEN90MIN;
std_limits.id_len = IDLEN90MIN;
std_limits.n_mac_pars = NMACPARS90MIN;
std_limits.exp_nest = EXP_NEST90MIN;
std_limits.blk_nest = BLK_NEST90MIN;
std_limits.inc_nest = INCLUDE_NEST90MIN;
std_limits.n_macro = NMACRO90MIN;
std_limits.line_num = LINE90LIMIT;
}
/* Else pre-Standard mode */
}
static void set_pragma_op( void)
/*
* #define _Pragma(a) _Pragma ( a )
* Define _Pragma() operator as a special macro so as to be searched
* easily. The unusual 'DEF_PRAGMA' is a marker of this psuedo
* macro.
*/
{
char * name = "_Pragma";
char tmp[ 16];
sprintf( tmp, "%c%s ( %c%c )", DEF_MAGIC, name, MAC_PARM, 1);
/* Replacement text */
look_and_install( name, DEF_PRAGMA, "a", tmp);
}
void init_sys_macro( void)
/*
* Define system-specific macros and some Standard required macros
* and undefine macros specified by -U options.
*/
{
/* This order is important. */
def_macros(); /* Define macros specified by -D */
init_predefines(); /* Define predefined macros */
undef_macros(); /* Undefine macros specified by -U */
}
void at_start( void)
/*
* Do the commands prior to processing main source file after do_options().
*/
{
FILEINFO * file_saved = infile;
put_info( file_saved);
}
static void put_info(
FILEINFO * sharp_file
)
/*
* Putout compiler-specific information.
*/
{
if (no_output || option_flags.p)
return;
sharp_file->line++;
sharp( sharp_file, 0);
sharp_file->line--;
}
static void set_env_dirs( void)
/*
* Add to include path those specified by environment variables.
*/
{
const char * env;
if (cplus_val) {
if ((env = getenv( ENV_CPLUS_INCLUDE_DIR)) != NULL)
parse_env( env);
}
if ((env = getenv( ENV_C_INCLUDE_DIR)) != NULL)
parse_env( env);
}
static void parse_env(
const char * env
)
/*
* Parse environmental variable and append the path to include-dir-list.
*/
{
char * save;
char * save_start;
char * p;
int sep;
save = save_start = save_string( env);
while (*save) {
p = save;
while (*p && *p != ENV_SEP)
p++;
if (p != save) { /* Variable separator */
sep = *p;
*p = EOS;
set_a_dir( save);
if (sep == EOS)
break;
save = ++p;
}
while (*save == ENV_SEP)
++save;
}
free( save_start);
}
static void set_sys_dirs(
int set_cplus_dir /* Set C++ include-directory too */
)
/*
* Set site-specific and system-specific directories to the include directory
* list.
*/
{
}
static void set_a_dir(
const char * dirname /* The path-name */
)
/*
* Append an include directory.
* This routine is called from the following routines (in this order).
* 1. do_options() by -I option.
* 2. do_options() by -isystem option (for GNUC).
* 3. set_env_dirs() by environment variables.
* 4. set_sys_dirs() by CPLUS_INCLUDE_DIR?, C_INCLUDE_DIR? and system-
* specifics (unless -I- or -nostdinc option is specified).
* Ignore non-existent directory.
* Note that this routine should be called only in initializing steps,
* because increase of include dirs causes reallocation of incdir[].
* Note: a trailing PATH-DELIM is appended by norm_path().
*/
{
char * norm_name;
const char ** ip;
if (incdir == NULL) { /* Should be initialized */
max_inc = INIT_NUM_INCLUDE;
incdir = (const char **) xmalloc( sizeof (char *) * max_inc);
incend = &incdir[ 0];
} else if (incend - incdir >= max_inc) { /* Buffer full */
incdir = (const char **) xrealloc( (void *) incdir
, sizeof (char *) * max_inc * 2);
incend = &incdir[ max_inc];
max_inc *= 2;
}
if (dirname == NULL)
return; /* Only to initialize incdir[] */
norm_name = norm_dir( dirname, FALSE);
if (! norm_name) /* Non-existent */
return;
for (ip = incdir; ip < incend; ip++) {
if (str_case_eq( *ip, norm_name)) {
if (option_flags.v)
mcpp_fprintf( ERR, "Duplicate directory \"%s\" is ignored\n"
, norm_name);
free( norm_name); /* Already registered */
return;
}
}
/* Register new directory */
*incend++ = norm_name;
}
static char * norm_dir(
const char * dirname, /* Directory path to normalize */
int framework /* Setting a framework directory*/
)
/*
* Normalize include directory path.
* Handle -isysroot option for GCC, including framework directory for SYS_MAC.
*/
{
char * norm_name;
{
norm_name = norm_path( dirname, NULL, FALSE, FALSE);
/* Normalize the pathname to compare */
if (! norm_name && option_flags.v)
mcpp_fprintf( ERR, "Non-existent directory \"%s\" is ignored\n"
, dirname);
}
return norm_name;
}
static char * norm_path(
const char * dir, /* Include directory (maybe "", never NULL) */
const char * fname,
/* Filename (possibly has directory part, or maybe NULL) */
int inf, /* If TRUE, output some infs when (mcpp_debug & PATH) */
int hmap /* "header map" file of Apple-GCC */
)
/*
* Normalize the pathname removing redundant components such as
* "foo/../", "./" and trailing "/.".
* Append trailing "/" if 'fname' is NULL.
* Change relative path to absolute path.
* Dereference a symbolic linked file (or directory) to a real directory/file.
* Return a malloc'ed buffer, if the directory/file exists.
* Return NULL, if the specified directory/file does not exist or 'dir' is
* not a directory or 'fname' is not a regular file.
* This routine is called from set_a_dir(), init_gcc_macro(), do_once() and
* open_file().
*/
{
char * norm_name; /* The path-list converted */
char * start;
char * cp1;
char * cp2;
char * abs_path;
int len; /* Should not be size_t */
size_t start_pos = 0;
char slbuf1[ PATHMAX+1]; /* Working buffer */
struct _stat st_buf;
if (! dir || (*dir && is_full_path( fname)))
cfatal( "Bug: Wrong argument to norm_path()" /* _F_ */
, NULL, 0L, NULL);
inf = 0;
strcpy( slbuf1, dir); /* Include directory */
len = strlen( slbuf1);
if (fname && len && slbuf1[ len - 1] != PATH_DELIM) {
slbuf1[ len] = PATH_DELIM; /* Append PATH_DELIM */
slbuf1[ ++len] = EOS;
} else if (! fname && len && slbuf1[ len - 1] == PATH_DELIM) {
/* stat() of some systems do not like trailing '/' */
slbuf1[ --len] = EOS;
}
if (fname)
strcat( slbuf1, fname);
if (stat( slbuf1, & st_buf) != 0 /* Non-existent */
|| (! fname && ! S_ISDIR( st_buf.st_mode))
/* Not a directory though 'fname' is not specified */
|| (fname && ! S_ISREG( st_buf.st_mode)))
/* Not a regular file though 'fname' is specified */
return NULL;
if (! fname) {
slbuf1[ len] = PATH_DELIM; /* Append PATH_DELIM */
slbuf1[ ++len] = EOS;
}
len = strlen( slbuf1);
start = norm_name = xmalloc( len + 1); /* Need a new buffer */
strcpy( norm_name, slbuf1);
bsl2sl( norm_name);
cp1 = norm_name;
if (*(cp1 + 1) == ':')
start = cp1 += 2; /* Next to the drive letter */
start_pos = 2;
if (len == 1 && *norm_name == '/') /* Only "/" */
return norm_name;
if (strncmp( cp1, "./", 2) == 0) /* Remove beginning "./" */
memmove( cp1, cp1 + 2, strlen( cp1 + 2) + 1); /* +1 for EOS */
if (*start != '/') { /* Relative path to current directory */
/* Make absolute path */
abs_path = xmalloc( len + strlen( cur_work_dir) + 1);
cp1 = stpcpy( abs_path, cur_work_dir);
strcpy( cp1, start);
free( norm_name);
norm_name = abs_path;
start = cp1 = norm_name + start_pos;
}
while ((cp1 = strstr( cp1, "/./")) != NULL)
memmove( cp1, cp1 + 2, strlen( cp1 + 2) + 1);
/* Remove "/." of "/./" */
cp1 = start;
/* Remove redundant "foo/../" */
while ((cp1 = strstr( cp1, "/../")) != NULL) {
*cp1 = EOS;
if ((cp2 = strrchr( start, '/')) != NULL) {
if (*(cp1 - 1) != '.') {
memmove( cp2 + 1, cp1 + 4, strlen( cp1 + 4) + 1);
/* Remove "foo/../" */
cp1 = cp2;
} else { /* Impossible */
break;
}
} else { /* Impossible */
break;
}
}
return norm_name;
}
static void def_macros( void)
/*
* Define macros specified by -D option.
* This routine should be called before undef_macros().
*/
{
int i;
for (i = 0; i < def_cnt; i++)
def_a_macro( 'D', def_list[ i]);
}
static void undef_macros( void)
/*
* Undefine macros specified by -U option.
* This routine should be called after init_predefine().
*/
{
char * name;
int i;
for (i = 0; i < undef_cnt; i++) {
name = undef_list[ i];
if (look_id( name) != NULL)
undefine( name);
else if (warn_level & 8)
mcpp_fprintf( ERR, "\"%s\" wasn't defined\n", name);
}
}
static const char * toolong_fname =
"Too long header name \"%s%.0ld%s\""; /* _F_ */
static const char * excess_token =
"Excessive token sequence \"%s\""; /* _E_, _W1_ */
int do_include(
int next /* TRUE if the directive is #include_next */
)
/*
* Process the #include line.
* There are three variations:
* #include "file" search somewhere relative to the
* current (or source) directory, if not
* found, treat as #include <file>.
* #include <file> Search in an implementation-dependent
* list of places.
* #include macro-call Expand the macro call, it must be one of
* "file" or <file>, process as such.
* On success : return TRUE;
* On failure of syntax : return FALSE;
* On failure of file opening : return FALSE.
* do_include() always absorbs the line (including the <newline>).
*/
{
const char * const no_name = "No header name"; /* _E_ */
char header[ PATHMAX + 16];
int token_type;
char * fname;
char * filename;
int delim; /* " or <, > */
if ((delim = skip_ws()) == '\n') { /* No argument */
cerror( no_name, NULL, 0L, NULL);
return FALSE;
}
fname = infile->bptr - 1; /* Current token for diagnosis */
if (standard && (char_type[ delim] & LET)) { /* Maybe macro */
int c;
char *hp;
hp = header;
*hp = EOS;
c = delim;
while (get_unexpandable( c, FALSE) != NO_TOKEN) {
/* Expand any macros in the line */
if (header + PATHMAX < hp + (int) (workp - work_buf))
cfatal( toolong_fname, header, 0L, work_buf);
hp = stpcpy( hp, work_buf);
while (char_type[ c = get_ch()] & HSP)
*hp++ = c;
}
*hp = EOS; /* Ensure to terminate */
if (macro_line == MACRO_ERROR) /* Unterminated macro */
return FALSE; /* already diagnosed. */
unget_string( header, NULL); /* To re-read */
delim = skip_ws();
if (delim == '\n') {
cerror( no_name, NULL, 0L, NULL); /* Expanded to */
return FALSE; /* 0 token. */
}
}
token_type = scan_token( delim, (workp = work_buf, &workp)
, work_buf + PATHMAX);
if (token_type == STR) /* String literal form */
goto found_name;
else if (token_type == OPE && openum == OP_LT) /* '<' */
workp = scan_quote( delim, work_buf, work_buf + PATHMAX, TRUE);
/* Re-construct or diagnose */
else /* Any other token in- */
goto not_header; /* cluding <=, <<, <% */
if (workp == NULL) /* Missing closing '>' */
goto syntax_error;
found_name:
*--workp = EOS; /* Remove the closing and */
fname = save_string( &work_buf[ 1]); /* the starting delimiter. */
if (skip_ws() != '\n') {
if (standard) {
cerror( excess_token, infile->bptr-1, 0L, NULL);
skip_nl();
goto error;
} else {
if (warn_level & 1)
cwarn( excess_token, infile->bptr-1, 0L, NULL);
skip_nl();
}
}
bsl2sl( fname);
filename = fname;
if (open_include( filename, (delim == '"'), next)) {
/* 'fname' should not be free()ed, it is used as file-> */
/* real_fname and has been registered into fnamelist[] */
return TRUE;
}
cerror( "Can't open include file \"%s\"", filename, 0L, NULL); /* _E_ */
error:
free( fname);
return FALSE;
not_header:
cerror( "Not a header name \"%s\"", fname, 0L, NULL); /* _E_ */
syntax_error:
skip_nl();
return FALSE;
}
static int open_include(
char * filename, /* File name to include */
int searchlocal, /* TRUE if #include "file" */
int next /* TRUE if #include_next */
)
/*
* Open an include file. This routine is only called from do_include() above.
* It searches the list of directories via search_dir() and opens the file
* via open_file(), linking it into the list of active files.
* Returns TRUE if the file was opened, FALSE if it fails.
*/
{
char src_dir[ PATHMAX] = { EOS, }; /* Directory part of includer */
int full_path; /* Filename is full-path-list */
int has_dir = FALSE; /* Includer has directory part */
int has_dir_src = FALSE;
int has_dir_fname = FALSE;
full_path = is_full_path( filename);
if (!full_path && searchlocal && (search_rule & SOURCE)) {
has_dir_src = has_directory( infile->src_dir, src_dir);
has_dir_fname = has_directory( infile->real_fname
, src_dir + strlen( src_dir));
/* Get directory part of the parent file of the file to include.*/
/* Note that infile->dirp of main input file is set to "" and */
/* remains the same even if -include options are processed. */
has_dir = has_dir_src || has_dir_fname
|| (**(infile->dirp) != EOS);
}
#ifdef BUILDING_DLL /* Reordered search include files for DLL (Fakels) */
if (full_path) {
if (open_file( &null, NULL, filename, FALSE, FALSE, FALSE))
return TRUE;
return FALSE;
}
#else
if ((searchlocal && ((search_rule & CURRENT) || !has_dir)) || full_path) {
/*
* Look in local directory first.
* Try to open filename relative to the "current directory".
*/
if (open_file( &null, NULL, filename, searchlocal && !full_path
, FALSE, FALSE))
return TRUE;
if (full_path)
return FALSE;
}
#endif
if (searchlocal && (search_rule & SOURCE) && has_dir) {
/*
* Look in local directory of source file.
* Try to open filename relative to the "source directory".
*/
if (open_file( infile->dirp, src_dir, filename, TRUE, FALSE, FALSE))
return TRUE;
}
/* Search the include directories */
if (search_dir( filename, searchlocal, next))
return TRUE;
#ifdef BUILDING_DLL /* Reordered search include files for DLL (Fakels) */
if ((searchlocal && ((search_rule & CURRENT) || !has_dir))) {
/*
* Look in local directory.
* Try to open filename relative to the "current directory".
*/
if (open_file( &null, NULL, filename, searchlocal, FALSE, FALSE))
return TRUE;
}
#endif
return FALSE;
}
static int has_directory(
const char * source, /* Filename to examine */
char * directory /* Put directory stuff here */
)
/*
* If a directory is found in the 'source' filename string (i.e. "includer"),
* the directory part of the string is copied to 'directory' and
* has_directory() returns TRUE.
* Else, nothing is copied and it returns FALSE.
*/
{
const char * sp;
size_t len;
if (! source)
return FALSE;
if ((sp = strrchr( source, PATH_DELIM)) == NULL) {
return FALSE;
} else {
len = (size_t)(sp - source) + 1; /* With path-delimiter */
memcpy( directory, source, len);
directory[ len] = EOS;
return TRUE;
}
}
static int is_full_path(
const char * path
)
/*
* Check whether the path is a full (absolute) path list or not.
*/
{
if (! path)
return FALSE;
if ((path[1] == ':' && path[2] == PATH_DELIM) /* "C:/path" */
|| path[0] == PATH_DELIM) /* Root dir of current drive */
return TRUE;
else
return FALSE;
}
static int search_dir(
char * filename, /* File name to include */
int searchlocal, /* #include "header.h" */
int next /* TRUE if #include_next */
)
/*
* Look in any directories specified by -I command line arguments,