diff options
Diffstat (limited to 'posix/getopt.c')
| -rw-r--r-- | posix/getopt.c | 62 |
1 files changed, 31 insertions, 31 deletions
diff --git a/posix/getopt.c b/posix/getopt.c index 6a28ed6..ac2b0cf 100644 --- a/posix/getopt.c +++ b/posix/getopt.c @@ -36,7 +36,7 @@ Library, but also included in many other GNU distributions. Compiling and linking in this code is a waste when using the GNU C library (especially if it is a shared library). Rather than having every GNU - program understand `configure --with-gnu-libc' and omit the object files, + program understand 'configure --with-gnu-libc' and omit the object files, it is simpler to just do this in the source for each such file. */ #define GETOPT_INTERFACE_VERSION 2 @@ -80,11 +80,11 @@ # define attribute_hidden #endif -/* This version of `getopt' appears to the caller like standard Unix `getopt' +/* This version of 'getopt' appears to the caller like standard Unix 'getopt' but it behaves differently for the user, since it allows the user to intersperse the options with the other arguments. - As `getopt' works, it permutes the elements of ARGV so that, + As 'getopt' works, it permutes the elements of ARGV so that, when it is done, all the options precede everything else. Thus all application programs are extended to handle flexible argument order. @@ -97,24 +97,24 @@ #include "getopt.h" #include "getopt_int.h" -/* For communication from `getopt' to the caller. - When `getopt' finds an option that takes an argument, +/* For communication from 'getopt' to the caller. + When 'getopt' finds an option that takes an argument, the argument value is returned here. - Also, when `ordering' is RETURN_IN_ORDER, + Also, when 'ordering' is RETURN_IN_ORDER, each non-option ARGV-element is returned here. */ char *optarg; /* Index in ARGV of the next element to be scanned. This is used for communication to and from the caller - and for communication between successive calls to `getopt'. + and for communication between successive calls to 'getopt'. - On entry to `getopt', zero means this is the first call; initialize. + On entry to 'getopt', zero means this is the first call; initialize. - When `getopt' returns -1, this is the index of the first of the + When 'getopt' returns -1, this is the index of the first of the non-option elements that the caller should itself scan. - Otherwise, `optind' communicates from one call to the next + Otherwise, 'optind' communicates from one call to the next how much of ARGV has been scanned so far. */ /* 1003.2 says this must be 1 before any call. */ @@ -153,7 +153,7 @@ extern char *getenv (); The other is elements [last_nonopt,optind), which contains all the options processed since those non-options were skipped. - `first_nonopt' and `last_nonopt' are relocated so that they describe + 'first_nonopt' and 'last_nonopt' are relocated so that they describe the new indices of the non-options in ARGV after they are moved. */ static void @@ -252,48 +252,48 @@ _getopt_initialize (int argc, char *const *argv, const char *optstring, If an element of ARGV starts with '-', and is not exactly "-" or "--", then it is an option element. The characters of this element - (aside from the initial '-') are option characters. If `getopt' + (aside from the initial '-') are option characters. If 'getopt' is called repeatedly, it returns successively each of the option characters from each of the option elements. - If `getopt' finds another option character, it returns that character, - updating `optind' and `nextchar' so that the next call to `getopt' can + If 'getopt' finds another option character, it returns that character, + updating 'optind' and 'nextchar' so that the next call to 'getopt' can resume the scan with the following option character or ARGV-element. - If there are no more option characters, `getopt' returns -1. - Then `optind' is the index in ARGV of the first ARGV-element + If there are no more option characters, 'getopt' returns -1. + Then 'optind' is the index in ARGV of the first ARGV-element that is not an option. (The ARGV-elements have been permuted so that those that are not options now come last.) OPTSTRING is a string containing the legitimate option characters. If an option character is seen that is not listed in OPTSTRING, - return '?' after printing an error message. If you set `opterr' to + return '?' after printing an error message. If you set 'opterr' to zero, the error message is suppressed but we still return '?'. If a char in OPTSTRING is followed by a colon, that means it wants an arg, so the following text in the same ARGV-element, or the text of the following - ARGV-element, is returned in `optarg'. Two colons mean an option that + ARGV-element, is returned in 'optarg'. Two colons mean an option that wants an optional arg; if there is text in the current ARGV-element, - it is returned in `optarg', otherwise `optarg' is set to zero. + it is returned in 'optarg', otherwise 'optarg' is set to zero. - If OPTSTRING starts with `-' or `+', it requests different methods of + If OPTSTRING starts with '-' or '+', it requests different methods of handling the non-option ARGV-elements. See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. - Long-named options begin with `--' instead of `-'. + Long-named options begin with '--' instead of '-'. Their names may be abbreviated as long as the abbreviation is unique or is an exact match for some defined option. If they have an argument, it follows the option name in the same ARGV-element, separated - from the option name by a `=', or else the in next ARGV-element. - When `getopt' finds a long-named option, it returns 0 if that option's - `flag' field is nonzero, the value of the option's `val' field - if the `flag' field is zero. + from the option name by a '=', or else the in next ARGV-element. + When 'getopt' finds a long-named option, it returns 0 if that option's + 'flag' field is nonzero, the value of the option's 'val' field + if the 'flag' field is zero. The elements of ARGV aren't really const, because we permute them. But we pretend they're const in the prototype to be compatible with other systems. - LONGOPTS is a vector of `struct option' terminated by an + LONGOPTS is a vector of 'struct option' terminated by an element containing a name which is zero. LONGIND returns the index in LONGOPT of the long-named option found. @@ -361,7 +361,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring, d->__last_nonopt = d->optind; } - /* The special ARGV-element `--' means premature end of options. + /* The special ARGV-element '--' means premature end of options. Skip it like a null option, then exchange with previous non-options as if it were an option, then skip everything else like a non-option. */ @@ -733,7 +733,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring, char c = *d->__nextchar++; char *temp = strchr (optstring, c); - /* Increment `optind' when we start to process its last character. */ + /* Increment 'optind' when we start to process its last character. */ if (*d->__nextchar == '\0') ++d->optind; @@ -832,7 +832,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring, return c; } else - /* We already incremented `d->optind' once; + /* We already incremented 'd->optind' once; increment it again when taking next ARGV-elt as argument. */ d->optarg = argv[d->optind++]; @@ -1059,7 +1059,7 @@ _getopt_internal_r (int argc, char *const *argv, const char *optstring, c = '?'; } else - /* We already incremented `optind' once; + /* We already incremented 'optind' once; increment it again when taking next ARGV-elt as argument. */ d->optarg = argv[d->optind++]; d->__nextchar = NULL; @@ -1115,7 +1115,7 @@ __posix_getopt (int argc, char *const *argv, const char *optstring) #ifdef TEST /* Compile with -DTEST to make an executable for use in testing - the above definition of `getopt'. */ + the above definition of 'getopt'. */ int main (int argc, char **argv) |