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/* usage.c
*
* Show usage message.
*/
#include <stdio.h>
#include <string.h>
usage(char *myname)
{
char * p;
char * name_p;
name_p = myname;
if ( p = strrchr(myname,'/') )
name_p = p+1; /* point after final '/' */
#ifdef MSDOS
if ( p = strrchr(name_p,'\\') )
name_p = p+1; /* point after final '\\' */
if ( p = strrchr(name_p,':') )
name_p = p+1; /* point after final ':' */
printf("\nUsage: %s [-acdnpsSvw] [-Dnumber] [-i[extension]] [-Idirectory]"
#else
printf("\nUsage: %s [-acdnpPsSuUvw] [-Dnumber] [-i[extension]] [-Idirectory]"
#endif
"\n [-e \"command\"] [-x[directory]] [filename] [arguments]\n", name_p);
printf("\n -a autosplit mode with -n or -p"
"\n -c syntaxcheck only"
"\n -d run scripts under debugger"
"\n -n assume 'while (<>) { ...script... }' loop arround your script"
"\n -p assume loop like -n but print line also like sed"
#ifndef MSDOS
"\n -P run script through C preprocessor befor compilation"
#endif
"\n -s enable some switch parsing for switches after script name"
"\n -S look for the script using PATH environment variable");
#ifndef MSDOS
printf("\n -u dump core after compiling the script"
"\n -U allow unsafe operations");
#endif
printf("\n -v print version number and patchlevel of perl"
"\n -w turn warnings on for compilation of your script\n"
"\n -Dnumber set debugging flags"
"\n -i[extension] edit <> files in place (make backup if extension supplied)"
"\n -Idirectory specify include directory in conjunction with -P"
"\n -e command one line of script, multiple -e options are allowed"
"\n [filename] can be ommitted, when -e is used"
"\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n");
}
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