diff options
Diffstat (limited to 'sntp/libopts/file.c')
| -rw-r--r-- | sntp/libopts/file.c | 232 |
1 files changed, 130 insertions, 102 deletions
diff --git a/sntp/libopts/file.c b/sntp/libopts/file.c index bb6adf63bc0f..ec740c5d309d 100644 --- a/sntp/libopts/file.c +++ b/sntp/libopts/file.c @@ -2,11 +2,15 @@ /** * \file file.c * - * Time-stamp: "2010-07-10 11:00:59 bkorb" + * Handle options that have file names for arguments. * + * @addtogroup autoopts + * @{ + */ +/* * This file is part of AutoOpts, a companion to AutoGen. * AutoOpts is free software. - * AutoOpts is Copyright (c) 1992-2011 by Bruce Korb - all rights reserved + * AutoOpts is Copyright (C) 1992-2014 by Bruce Korb - all rights reserved * * AutoOpts is available under any one of two licenses. The license * in use must be one of these two and the choice is under the control @@ -18,12 +22,122 @@ * The Modified Berkeley Software Distribution License * See the file "COPYING.mbsd" * - * These files have the following md5sums: + * These files have the following sha256 sums: + * + * 8584710e9b04216a394078dc156b781d0b47e1729104d666658aecef8ee32e95 COPYING.gplv3 + * 4379e7444a0e2ce2b12dd6f5a52a27a4d02d39d247901d3285c88cf0d37f477b COPYING.lgplv3 + * 13aa749a5b0a454917a944ed8fffc530b784f5ead522b1aacaf4ec8aa55a6239 COPYING.mbsd + */ + +/** + * Make sure the directory containing the subject file exists and that + * the file exists or does not exist, per the option requirements. + * + * @param ftype file existence type flags + * @param pOpts program option descriptor + * @param pOD the option descriptor + */ +static void +check_existence(teOptFileType ftype, tOptions * pOpts, tOptDesc * pOD) +{ + char const * fname = pOD->optArg.argString; + struct stat sb; + + errno = 0; + + switch (ftype & FTYPE_MODE_EXIST_MASK) { + case FTYPE_MODE_MUST_NOT_EXIST: + if ((stat(fname, &sb) == 0) || (errno != ENOENT)) { + if (errno == 0) + errno = EINVAL; + fserr_exit(pOpts->pzProgName, "stat", fname); + /* NOTREACHED */ + } + /* FALLTHROUGH */ + + default: + case FTYPE_MODE_MAY_EXIST: + { + char * p = strrchr(fname, DIRCH); + size_t l; + + if (p == NULL) + /* + * The file may or may not exist and its directory is ".". + * Assume that "." exists. + */ + break; + + l = (size_t)(p - fname); + p = AGALOC(l + 1, "fname"); + memcpy(p, fname, l); + p[l] = NUL; + + if ((stat(p, &sb) != 0) || (errno = EINVAL, ! S_ISDIR(sb.st_mode))) + fserr_exit(pOpts->pzProgName, "stat", p); + /* NOTREACHED */ + + AGFREE(p); + break; + } + + case FTYPE_MODE_MUST_EXIST: + if ( (stat(fname, &sb) != 0) + || (errno = EINVAL, ! S_ISREG(sb.st_mode)) ) + fserr_exit(pOpts->pzProgName, "stat", fname); + /* NOTREACHED */ + + break; + } +} + +/** + * Open the specified file with open(2) and save the FD. * - * 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3 - * 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3 - * 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd + * @param pOpts program option descriptor + * @param pOD the option descriptor + * @param mode the open mode (uses int flags value) */ +static void +open_file_fd(tOptions * pOpts, tOptDesc * pOD, tuFileMode mode) +{ + int fd = open(pOD->optArg.argString, mode.file_flags); + if (fd < 0) + fserr_exit(pOpts->pzProgName, "open", pOD->optArg.argString); + /* NOTREACHED */ + + if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) + pOD->optCookie = (void *)pOD->optArg.argString; + else + AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); + + pOD->optArg.argFd = fd; + pOD->fOptState &= ~OPTST_ALLOC_ARG; +} + +/** + * Open the specified file with open(2) and save the FD. + * + * @param pOpts program option descriptor + * @param pOD the option descriptor + * @param mode the open mode (uses "char *" mode value) + */ +static void +fopen_file_fp(tOptions * pOpts, tOptDesc * pOD, tuFileMode mode) +{ + FILE * fp = fopen(pOD->optArg.argString, mode.file_mode); + if (fp == NULL) + fserr_exit(pOpts->pzProgName, "fopen", pOD->optArg.argString); + /* NOTREACHED */ + + if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) + pOD->optCookie = (void *)pOD->optArg.argString; + else + AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); + + pOD->optArg.argFp = fp; + pOD->fOptState &= ~OPTST_ALLOC_ARG; +} /*=export_func optionFileCheck * private: @@ -42,7 +156,7 @@ * (FILE* pointer). =*/ void -optionFileCheck(tOptions* pOpts, tOptDesc* pOD, +optionFileCheck(tOptions * pOpts, tOptDesc * pOD, teOptFileType ftype, tuFileMode mode) { if (pOpts <= OPTPROC_EMIT_LIMIT) { @@ -51,11 +165,11 @@ optionFileCheck(tOptions* pOpts, tOptDesc* pOD, switch (ftype & FTYPE_MODE_EXIST_MASK) { case FTYPE_MODE_MUST_NOT_EXIST: - fputs(zFileCannotExist, option_usage_fp); + fputs(zFileCannotExist + tab_skip_ct, option_usage_fp); break; case FTYPE_MODE_MUST_EXIST: - fputs(zFileMustExist, option_usage_fp); + fputs(zFileMustExist + tab_skip_ct, option_usage_fp); break; } return; @@ -67,104 +181,18 @@ optionFileCheck(tOptions* pOpts, tOptDesc* pOD, return; } - { - struct stat sb; - - errno = 0; - - switch (ftype & FTYPE_MODE_EXIST_MASK) { - case FTYPE_MODE_MUST_NOT_EXIST: - if ( (stat(pOD->optArg.argString, &sb) == 0) - || (errno != ENOENT) ){ - if (errno == 0) - errno = EINVAL; - fprintf(stderr, zFSOptError, errno, strerror(errno), - zFSOptErrNoExist, pOD->optArg.argString, pOD->pz_Name); - pOpts->pUsageProc(pOpts, EXIT_FAILURE); - /* NOTREACHED */ - } - /* FALLTHROUGH */ - - default: - case FTYPE_MODE_MAY_EXIST: - { - char * p = strrchr(pOD->optArg.argString, DIRCH); - if (p == NULL) - break; /* assume "." always exists. */ - - *p = NUL; - if ( (stat(pOD->optArg.argString, &sb) != 0) - || (errno = EINVAL, ! S_ISDIR(sb.st_mode)) ){ - fprintf(stderr, zFSOptError, errno, strerror(errno), - zFSOptErrMayExist, pOD->optArg.argString, pOD->pz_Name); - pOpts->pUsageProc(pOpts, EXIT_FAILURE); - /* NOTREACHED */ - } - if (p != NULL) - *p = DIRCH; - break; - } - - case FTYPE_MODE_MUST_EXIST: - if ( (stat(pOD->optArg.argString, &sb) != 0) - || (errno = EINVAL, ! S_ISREG(sb.st_mode)) ){ - fprintf(stderr, zFSOptError, errno, strerror(errno), - zFSOptErrMustExist, pOD->optArg.argString, - pOD->pz_Name); - pOpts->pUsageProc(pOpts, EXIT_FAILURE); - /* NOTREACHED */ - } - break; - } - } + check_existence(ftype, pOpts, pOD); switch (ftype & FTYPE_MODE_OPEN_MASK) { default: - case FTYPE_MODE_NO_OPEN: - break; - - case FTYPE_MODE_OPEN_FD: - { - int fd = open(pOD->optArg.argString, mode.file_flags); - if (fd < 0) { - fprintf(stderr, zFSOptError, errno, strerror(errno), - zFSOptErrOpen, pOD->optArg.argString, pOD->pz_Name); - pOpts->pUsageProc(pOpts, EXIT_FAILURE); - /* NOTREACHED */ - } - - if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) - pOD->optCookie = (void *)pOD->optArg.argString; - else - AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); - - pOD->optArg.argFd = fd; - pOD->fOptState &= ~OPTST_ALLOC_ARG; - break; - } - - case FTYPE_MODE_FOPEN_FP: - { - FILE* fp = fopen(pOD->optArg.argString, mode.file_mode); - if (fp == NULL) { - fprintf(stderr, zFSOptError, errno, strerror(errno), - zFSOptErrFopen, pOD->optArg.argString, pOD->pz_Name); - pOpts->pUsageProc(pOpts, EXIT_FAILURE); - /* NOTREACHED */ - } - - if ((pOD->fOptState & OPTST_ALLOC_ARG) != 0) - pOD->optCookie = (void *)pOD->optArg.argString; - else - AGDUPSTR(pOD->optCookie, pOD->optArg.argString, "file name"); - - pOD->optArg.argFp = fp; - pOD->fOptState &= ~OPTST_ALLOC_ARG; - break; - } + case FTYPE_MODE_NO_OPEN: break; + case FTYPE_MODE_OPEN_FD: open_file_fd( pOpts, pOD, mode); break; + case FTYPE_MODE_FOPEN_FP: fopen_file_fp(pOpts, pOD, mode); break; } } -/* + +/** @} + * * Local Variables: * mode: C * c-file-style: "stroustrup" |