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-rw-r--r--mdk-stage1/slang/slprepr.c427
1 files changed, 0 insertions, 427 deletions
diff --git a/mdk-stage1/slang/slprepr.c b/mdk-stage1/slang/slprepr.c
deleted file mode 100644
index 358eeb874..000000000
--- a/mdk-stage1/slang/slprepr.c
+++ /dev/null
@@ -1,427 +0,0 @@
-/* Copyright (c) 1996, 1999, 2001 John E. Davis
- * This file is part of the S-Lang library.
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Perl Artistic License.
- */
-
-/*--------------------------------*-C-*---------------------------------*
- * File: slprepr.c
- *
- * preprocessing routines
- */
-/*{{{ notes: */
-/*
- * various preprocessing tokens supported
- *
- * #ifdef TOKEN1 TOKEN2 ...
- * - True if any of TOKEN1 TOKEN2 ... are defined
- *
- * #ifndef TOKEN1 TOKEN2 ...
- * - True if none of TOKEN1 TOKEN2 ... are defined
- *
- * #iftrue
- * #ifnfalse
- * - always True
- *
- * #iffalse
- * #ifntrue
- * - always False
- *
- * #if$ENV
- * - True if the enviroment variable ENV is set
- *
- * #ifn$ENV
- * - True if the enviroment variable ENV is not set
- *
- * #if$ENV TOKEN1 TOKEN2 ...
- * - True if the contents of enviroment variable ENV match
- * any of TOKEN1 TOKEN2 ...
- *
- * #ifn$ENV TOKEN1 TOKEN2 ...
- * - True if the contents of enviroment variable ENV do not match
- * any of TOKEN1 TOKEN2 ...
- *
- * NB: For $ENV, the tokens may contain wildcard characters:
- * '?' - match any single character
- * '*' - match any number of characters
- *
- * #elif...
- * #else
- * #endif
- *
- *
- * mj olesen
- *----------------------------------------------------------------------*/
-/*}}}*/
-/*{{{ includes: */
-#include "slinclud.h"
-
-#include "slang.h"
-#include "_slang.h"
-/*}}}*/
-
-int (*SLprep_exists_hook) (char *, char);
-int (*_SLprep_eval_hook) (char *);
-
-/*{{{ SLprep_open_prep (), SLprep_close_prep () */
-int SLprep_open_prep (SLPreprocess_Type *pt)
-{
- pt->this_level = 0;
- pt->exec_level = 0;
- pt->prev_exec_level = 0;
- pt->comment_char = '%';
- pt->preprocess_char = '#';
- pt->flags = 0;
- return 0;
-}
-
-void SLprep_close_prep (SLPreprocess_Type *pt)
-{
- (void) pt;
-}
-/*}}}*/
-
-/*{{{ SLwildcard () */
-/*----------------------------------------------------------------------*
- * Does `string' match `pattern' ?
- *
- * '*' in pattern matches any sub-string (including the null string)
- * '?' matches any single char.
- *
- * Code taken from that donated by Paul Hudson <paulh@harlequin.co.uk>
- * to the fvwm project.
- * It is public domain, no strings attached. No guarantees either.
- *----------------------------------------------------------------------*/
-static int SLwildcard (char *pattern, char *string)
-{
- if (pattern == NULL || *pattern == '\0' || !strcmp (pattern, "*"))
- return 1;
- else if (string == NULL)
- return 0;
-
- while (*pattern && *string) switch (*pattern)
- {
- case '?':
- /* match any single character */
- pattern++;
- string++;
- break;
-
- case '*':
- /* see if rest of pattern matches any trailing */
- /* substring of the string. */
- if (*++pattern == '\0')
- return 1; /* trailing * must match rest */
-
- while (*string)
- {
- if (SLwildcard (pattern, string)) return 1;
- string++;
- }
- return 0;
-
- /* break; */
-
- default:
- if (*pattern == '\\')
- {
- if (*++pattern == '\0')
- pattern--; /* don't skip trailing backslash */
- }
- if (*pattern++ != *string++) return 0;
- break;
- }
-
- return ((*string == '\0')
- && ((*pattern == '\0') || !strcmp (pattern, "*")));
-}
-/*}}}*/
-
-#if defined(__16_BIT_SYSTEM__)
-# define MAX_DEFINES 10
-#else
-# define MAX_DEFINES 128
-#endif
-
-/* The extra one is for NULL termination */
-char *_SLdefines [MAX_DEFINES + 1];
-
-int SLdefine_for_ifdef (char *s) /*{{{*/
-{
- unsigned int i;
-
- for (i = 0; i < MAX_DEFINES; i++)
- {
- char *s1 = _SLdefines [i];
-
- if (s1 == s)
- return 0; /* already defined (hashed string) */
-
- if (s1 != NULL)
- continue;
-
- s = SLang_create_slstring (s);
- if (s == NULL)
- return -1;
-
- _SLdefines[i] = s;
- return 0;
- }
- return -1;
-}
-/*}}}*/
-
-/*{{{ static functions */
-static int is_any_defined(char *buf, char comment) /*{{{*/
-{
- char *sys;
- unsigned int i;
-
- while (1)
- {
- register char ch;
-
- /* Skip whitespace */
- while (((ch = *buf) == ' ') || (ch == '\t'))
- buf++;
-
- if ((ch == '\n') || (ch == 0) || (ch == comment))
- return 0;
-
- i = 0;
- while (NULL != (sys = _SLdefines [i++]))
- {
- unsigned int n;
-
- if (*sys != ch)
- continue;
-
- n = strlen (sys);
- if (0 == strncmp (buf, sys, n))
- {
- char ch1 = *(buf + n);
-
- if ((ch1 == '\n') || (ch1 == 0) ||
- (ch1 == ' ') || (ch1 == '\t') || (ch1 == comment))
- return 1;
- }
- }
-
- /* Skip past word */
- while (((ch = *buf) != ' ')
- && (ch != '\n')
- && (ch != 0)
- && (ch != '\t')
- && (ch != comment))
- buf++;
- }
-}
-/*}}}*/
-
-static unsigned char *tokenize (unsigned char *buf, char *token, unsigned int len)
-{
- register char *token_end;
-
- token_end = token + (len - 1); /* allow room for \0 */
-
- while ((token < token_end) && (*buf > ' '))
- *token++ = *buf++;
-
- if (*buf > ' ') return NULL; /* token too long */
-
- *token = '\0';
-
- while ((*buf == ' ') || (*buf == '\t')) buf++;
-
- return buf;
-}
-
-static int is_env_defined (char *buf, char comment) /*{{{*/
-{
- char * env, token [32];
-
- if ((*buf <= ' ') || (*buf == comment)) return 0; /* no token */
-
- if (NULL == (buf = (char *) tokenize ((unsigned char *) buf,
- token, sizeof (token))))
- return 0;
-
- if (NULL == (env = getenv (token)))
- return 0; /* ENV not defined */
-
- if ((*buf == '\0') || (*buf == '\n') || (*buf == comment))
- return 1; /* no tokens, but getenv() worked */
-
- do
- {
- buf = (char *) tokenize ((unsigned char *) buf, token, sizeof (token));
- if (buf == NULL) return 0;
-
- if (SLwildcard (token, env))
- return 1;
- }
- while (*buf && (*buf != '\n') && (*buf != comment));
-
- return 0;
-}
-/*}}}*/
-/*}}}*/
-
-int SLprep_line_ok (char *buf, SLPreprocess_Type *pt) /*{{{*/
-{
- int level, prev_exec_level, exec_level;
-
- if ((buf == NULL) || (pt == NULL)) return 1;
-
- if (*buf != pt->preprocess_char)
- {
- if (pt->this_level != pt->exec_level)
- return 0;
-
- if (*buf == '\n') return pt->flags & SLPREP_BLANK_LINES_OK;
- if (*buf == pt->comment_char) return pt->flags & SLPREP_COMMENT_LINES_OK;
-
- return 1;
- }
-
- level = pt->this_level;
- exec_level = pt->exec_level;
- prev_exec_level = pt->prev_exec_level;
-
- buf++;
-
- /* Allow '#!' to pass. This could be a shell script with something
- like '#! /local/bin/slang' */
- if ((*buf == '!') && (pt->preprocess_char == '#'))
- return 0;
-
- /* Allow whitespace as in '# ifdef' */
- while ((*buf == ' ') || (*buf == '\t')) buf++;
- if (*buf < 'a') return (level == exec_level);
-
- if (!strncmp(buf, "endif", 5))
- {
- if (level == exec_level)
- {
- exec_level--;
- prev_exec_level = exec_level;
- }
- level--;
- if (level < prev_exec_level) prev_exec_level = level;
- goto done;
- }
-
- if ((buf[0] == 'e') && (buf[1] == 'l')) /* else, elifdef, ... */
- {
- if ((level == exec_level + 1)
- && (prev_exec_level != level))
- {
- /* We are in position to execute */
- buf += 2;
- if ((buf[0] == 's') && (buf[1] == 'e'))
- {
- /* "else" */
- exec_level = level;
- goto done;
- }
-
- /* drop through to ifdef testing. First set variable
- * to values appropriate for ifdef testing.
- */
- level--; /* now == to exec level */
- }
- else
- {
- if (level == exec_level)
- {
- exec_level--;
- }
- goto done;
- }
- }
-
- if ((buf[0] == 'i') && (buf[1] == 'f'))
- {
- int truth;
-
- if (level != exec_level)
- {
- /* Not interested */
- level++;
- goto done;
- }
-
- level++;
-
- buf += 2;
- if (buf[0] == 'n')
- {
- truth = 0;
- buf++;
- }
- else truth = 1;
-
- if (!strncmp (buf, "def", 3))
- truth = (truth == is_any_defined(buf + 3, pt->comment_char));
-
- else if (!strncmp (buf, "false", 5))
- truth = !truth;
-
- else if (*buf == '$')
- truth = (truth == is_env_defined (buf + 1, pt->comment_char));
-
- else if (!strncmp (buf, "exists", 6)
- && (SLprep_exists_hook != NULL))
- truth = (truth == (*SLprep_exists_hook)(buf + 6, pt->comment_char));
-
- else if (!strncmp (buf, "eval", 4)
- && (_SLprep_eval_hook != NULL))
- truth = (truth == (*_SLprep_eval_hook) (buf + 4));
-
- else if (0 != strncmp (buf, "true", 4))
- return 1; /* let it bomb */
-
- if (truth)
- {
- exec_level = level;
- prev_exec_level = exec_level;
- }
- }
- else return 1; /* let it bomb. */
-
- done:
-
- if (exec_level < 0) return 1;
-
- pt->this_level = level;
- pt->exec_level = exec_level;
- pt->prev_exec_level = prev_exec_level;
- return 0;
-}
-/*}}}*/
-
-/*{{{ main() - for testing only */
-#if 0
-int main ()
-{
- char buf[1024];
- SLPreprocess_Type pt;
-
- SLprep_open_prep (&pt);
-
- SLdefine_for_ifdef ("UNIX");
-
- while (NULL != fgets (buf, sizeof (buf) - 1, stdin))
- {
- if (SLprep_line_ok (buf, &pt))
- {
- fputs (buf, stdout);
- }
- }
-
- SLprep_close_prep (&pt);
- return 0;
-}
-#endif
-/*}}}*/
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