diff options
Diffstat (limited to 'MISC/VMS/vms-code.c')
| -rw-r--r-- | MISC/VMS/vms-code.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/MISC/VMS/vms-code.c b/MISC/VMS/vms-code.c deleted file mode 100644 index 825a6b3..0000000 --- a/MISC/VMS/vms-code.c +++ /dev/null @@ -1,152 +0,0 @@ -/* vms-code.c -- additional VMS-specific support code for flex - */ - -#include "flexdef.h" - -static const char *original_arg0; -static const char default_arg0[] = "flex.exe"; - -#define IN_FD 0 -#define OUT_FD 1 -#define ERR_FD 2 - -static char *fix_arg0 PROTO((const char *)); - -/* Command line arguments fixup -- simplify argv[0], and handle `>' - output redirection request; called first thing from main(). */ - -void argv_fixup( iargc, iargv ) -int *iargc; -char ***iargv; -{ - const char *mode[3], *rfm[3], *name[3]; - char *p; - int i, oargc, punct, which, append, alt_rfm; - - /* - * Get original argv[0] supplied by run-time library startup code, - * then replace it with a stripped down one. - */ - original_arg0 = (*iargv)[0]; - (*iargv)[0] = fix_arg0(original_arg0); - - /* - * Check command line arguments for redirection request(s). - * For simplicity, if multiple attempts are made, the last one wins. - */ - name[0] = name[1] = name[2] = 0; - oargc = 1; /* number of args caller will see; count includes argv[0] */ - for (i = 1; i < *iargc; i++) { - p = (*iargv)[i]; - switch (*p) { - case '<': - /* might be "<dir>file"; then again, perhaps "<<dir>file" */ - punct = (strchr(p, '>') != 0); - if (p[1] == '<') { - if (!punct || p[2] == '<') - flexerror("<<'sentinel' input not supported."); - punct = 0; - } - if (punct) /* the '<' seems to be directory punctuation */ - goto arg; /*GOTO*/ - mode[IN_FD] = "r"; - rfm[IN_FD] = 0; - name[IN_FD] = ++p; - if (!*p && (i + 1) < *iargc) - name[IN_FD] = (*iargv)[++i]; - break; - case '>': - append = (p[1] == '>'); - if (append) ++p; - alt_rfm = (p[1] == '$'); - if (alt_rfm) ++p; - which = (p[1] == '&' ? ERR_FD : OUT_FD); - if (which == ERR_FD) ++p; - mode[which] = append ? "a" : "w"; - rfm[which] = alt_rfm ? "rfm=var" : "rfm=stmlf"; - name[which] = ++p; - if (!*p && (i + 1) < *iargc) - name[which] = (*iargv)[++i]; - break; - case '|': - flexerror("pipe output not supported."); - /*NOTREACHED*/ - break; - default: - arg: /* ordinary option or argument */ - (*iargv)[oargc++] = p; - break; - } - } - /* perform any requested redirection; don't bother with SYS$xxx logicals */ - if (name[IN_FD]) - if (!freopen(name[IN_FD], mode[IN_FD], stdin)) - lerrsf("failed to redirect `stdin' from \"%s\"", name[IN_FD]); - if (name[OUT_FD]) - if (!freopen(name[OUT_FD], mode[OUT_FD], stdout, - rfm[OUT_FD], "rat=cr", "mbc=32", "shr=nil")) - lerrsf("failed to redirect `stdout' to \"%s\"", name[OUT_FD]); - if (name[ERR_FD]) /* likely won't see message if this fails; oh well... */ - if (!freopen(name[ERR_FD], mode[ERR_FD], stderr, - rfm[ERR_FD], "rat=cr")) - lerrsf("failed to redirect `stderr' to \"%s\"", name[ERR_FD]); - /* remove any excess arguments (used up from redirection) */ - while (*iargc > oargc) - (*iargv)[--*iargc] = 0; - /* all done */ - return; -} - -/* Pick out the basename of a full filename, and return a pointer - to a modifiable copy of it. */ - -static char *fix_arg0( arg0 ) -const char *arg0; -{ - char *p, *new_arg0; - - if (arg0) { - /* strip off the path */ - if ((p = strrchr(arg0, ':')) != 0) /* device punctuation */ - arg0 = p + 1; - if ((p = strrchr(arg0, ']')) != 0) /* directory punctuation */ - arg0 = p + 1; - if ((p = strrchr(arg0, '>')) != 0) /* alternate dir punct */ - arg0 = p + 1; - } - if (!arg0 || !*arg0) - arg0 = default_arg0; - /* should now have "something.exe;#"; make a modifiable copy */ - new_arg0 = copy_string(arg0); - - /* strip off ".exe" and/or ";#" (version number), - unless it ended up as the whole name */ - if ((p = strchr(new_arg0, '.')) != 0 && (p > new_arg0) - && (p[1] == 'e' || p[1] == 'E') - && (p[2] == 'x' || p[2] == 'X') - && (p[3] == 'e' || p[3] == 'E') - && (p[4] == ';' || p[4] == '.' || p[4] == '\0')) - *p = '\0'; - else if ((p = strchr(new_arg0, ';')) != 0 && (p > new_arg0)) - *p = '\0'; - - return new_arg0; -} - - -#include <ssdef.h> -#include <stsdef.h> - -#ifdef exit -#undef exit -extern void exit PROTO((int)); /* <stdlib.h> ended up prototyping vms_exit */ -#endif - -/* Convert zero to VMS success and non-zero to VMS failure. The latter - does not bother trying to distinguish between various failure reasons. */ - -void vms_exit( status ) -int status; -{ - exit( status == 0 ? SS$_NORMAL : (SS$_ABORT | STS$M_INHIB_MSG) ); -} |