diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 245 |
1 files changed, 245 insertions, 0 deletions
@@ -1835,6 +1835,46 @@ VTOH(vtohs,short) VTOH(vtohl,long) #endif +int +do_binmode(PerlIO *fp, int iotype, int flag) +{ + if (flag != TRUE) + croak("panic: unsetting binmode"); /* Not implemented yet */ +#ifdef DOSISH +#ifdef atarist + if (!PerlIO_flush(fp) && (fp->_flag |= _IOBIN)) + return 1; + else + return 0; +#else + if (PerlLIO_setmode(PerlIO_fileno(fp), OP_BINARY) != -1) { +#if defined(WIN32) && defined(__BORLANDC__) + /* The translation mode of the stream is maintained independent + * of the translation mode of the fd in the Borland RTL (heavy + * digging through their runtime sources reveal). User has to + * set the mode explicitly for the stream (though they don't + * document this anywhere). GSAR 97-5-24 + */ + PerlIO_seek(fp,0L,0); + fp->flags |= _F_BIN; +#endif + return 1; + } + else + return 0; +#endif +#else +#if defined(USEMYBINMODE) + if (my_binmode(fp,iotype) != NULL) + return 1; + else + return 0; +#else + return 1; +#endif +#endif +} + /* VMS' my_popen() is in VMS.c, same with OS/2. */ #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) PerlIO * @@ -2404,6 +2444,211 @@ scan_hex(char *start, I32 len, I32 *retlen) return retval; } +char* +find_script(char *scriptname, bool dosearch, char **search_ext, I32 flags) +{ + dTHR; + char *xfound = Nullch; + char *xfailed = Nullch; + register char *s; + I32 len; + int retval; +#if defined(DOSISH) && !defined(OS2) && !defined(atarist) +# define SEARCH_EXTS ".bat", ".cmd", NULL +# define MAX_EXT_LEN 4 +#endif +#ifdef OS2 +# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL +# define MAX_EXT_LEN 4 +#endif +#ifdef VMS +# define SEARCH_EXTS ".pl", ".com", NULL +# define MAX_EXT_LEN 4 +#endif + /* additional extensions to try in each dir if scriptname not found */ +#ifdef SEARCH_EXTS + char *exts[] = { SEARCH_EXTS }; + char **ext = search_ext ? search_ext : exts; + int extidx = 0, i = 0; + char *curext = Nullch; +#else +# define MAX_EXT_LEN 0 +#endif + + /* + * If dosearch is true and if scriptname does not contain path + * delimiters, search the PATH for scriptname. + * + * If SEARCH_EXTS is also defined, will look for each + * scriptname{SEARCH_EXTS} whenever scriptname is not found + * while searching the PATH. + * + * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search + * proceeds as follows: + * If DOSISH or VMSISH: + * + look for ./scriptname{,.foo,.bar} + * + search the PATH for scriptname{,.foo,.bar} + * + * If !DOSISH: + * + look *only* in the PATH for scriptname{,.foo,.bar} (note + * this will not look in '.' if it's not in the PATH) + */ + +#ifdef VMS +# ifdef ALWAYS_DEFTYPES + len = strlen(scriptname); + if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { + int hasdir, idx = 0, deftypes = 1; + bool seen_dot = 1; + + hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; +# else + if (dosearch) { + int hasdir, idx = 0, deftypes = 1; + bool seen_dot = 1; + + hasdir = (strpbrk(scriptname,":[</") != Nullch) ; +# endif + /* The first time through, just add SEARCH_EXTS to whatever we + * already have, so we can check for default file types. */ + while (deftypes || + (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) ) + { + if (deftypes) { + deftypes = 0; + *tokenbuf = '\0'; + } + if ((strlen(tokenbuf) + strlen(scriptname) + + MAX_EXT_LEN) >= sizeof tokenbuf) + continue; /* don't search dir with too-long name */ + strcat(tokenbuf, scriptname); +#else /* !VMS */ + +#ifdef DOSISH + if (strEQ(scriptname, "-")) + dosearch = 0; + if (dosearch) { /* Look in '.' first. */ + char *cur = scriptname; +#ifdef SEARCH_EXTS + if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ + while (ext[i]) + if (strEQ(ext[i++],curext)) { + extidx = -1; /* already has an ext */ + break; + } + do { +#endif + DEBUG_p(PerlIO_printf(Perl_debug_log, + "Looking for %s\n",cur)); + if (PerlLIO_stat(cur,&statbuf) >= 0) { + dosearch = 0; + scriptname = cur; +#ifdef SEARCH_EXTS + break; +#endif + } +#ifdef SEARCH_EXTS + if (cur == scriptname) { + len = strlen(scriptname); + if (len+MAX_EXT_LEN+1 >= sizeof(tokenbuf)) + break; + cur = strcpy(tokenbuf, scriptname); + } + } while (extidx >= 0 && ext[extidx] /* try an extension? */ + && strcpy(tokenbuf+len, ext[extidx++])); +#endif + } +#endif + + if (dosearch && !strchr(scriptname, '/') +#ifdef DOSISH + && !strchr(scriptname, '\\') +#endif + && (s = PerlEnv_getenv("PATH"))) { + bool seen_dot = 0; + + bufend = s + strlen(s); + while (s < bufend) { +#if defined(atarist) || defined(DOSISH) + for (len = 0; *s +# ifdef atarist + && *s != ',' +# endif + && *s != ';'; len++, s++) { + if (len < sizeof tokenbuf) + tokenbuf[len] = *s; + } + if (len < sizeof tokenbuf) + tokenbuf[len] = '\0'; +#else /* ! (atarist || DOSISH) */ + s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf, s, bufend, + ':', + &len); +#endif /* ! (atarist || DOSISH) */ + if (s < bufend) + s++; + if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tokenbuf) + continue; /* don't search dir with too-long name */ + if (len +#if defined(atarist) || defined(DOSISH) + && tokenbuf[len - 1] != '/' + && tokenbuf[len - 1] != '\\' +#endif + ) + tokenbuf[len++] = '/'; + if (len == 2 && tokenbuf[0] == '.') + seen_dot = 1; + (void)strcpy(tokenbuf + len, scriptname); +#endif /* !VMS */ + +#ifdef SEARCH_EXTS + len = strlen(tokenbuf); + if (extidx > 0) /* reset after previous loop */ + extidx = 0; + do { +#endif + DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf)); + retval = PerlLIO_stat(tokenbuf,&statbuf); +#ifdef SEARCH_EXTS + } while ( retval < 0 /* not there */ + && extidx>=0 && ext[extidx] /* try an extension? */ + && strcpy(tokenbuf+len, ext[extidx++]) + ); +#endif + if (retval < 0) + continue; + if (S_ISREG(statbuf.st_mode) + && cando(S_IRUSR,TRUE,&statbuf) +#ifndef DOSISH + && cando(S_IXUSR,TRUE,&statbuf) +#endif + ) + { + xfound = tokenbuf; /* bingo! */ + break; + } + if (!xfailed) + xfailed = savepv(tokenbuf); + } +#ifndef DOSISH + if (!xfound && !seen_dot && !xfailed && (PerlLIO_stat(scriptname,&statbuf) < 0)) +#endif + seen_dot = 1; /* Disable message. */ + if (!xfound) + scriptname = NULL; +/* croak("Can't %s %s%s%s", + (xfailed ? "execute" : "find"), + (xfailed ? xfailed : scriptname), + (xfailed ? "" : " on PATH"), + (xfailed || seen_dot) ? "" : ", '.' not in PATH"); */ + if (xfailed) + Safefree(xfailed); + scriptname = xfound; + } + return scriptname; +} + + #ifdef USE_THREADS #ifdef FAKE_THREADS /* Very simplistic scheduler for now */ |