/* Some global variables that tells us how to parse. */
static shell_t shell=BASH; /* The shell we generate output for. */
-static int quiet_errors=0; /* 0 is not quiet. */
-static int quiet_output=0; /* 0 is not quiet. */
+static int quiet_errors; /* 0 is not quiet. */
+static int quiet_output; /* 0 is not quiet. */
static int quote=1; /* 1 is do quote. */
-static int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */
+static int alternative; /* 0 is getopt_long, 1 is getopt_long_only */
/* Function prototypes */
static const char *normalize(const char *arg);
static int generate_output(char * argv[],int argc,const char *optstr,
- const struct option *longopts);
+ const struct option *longopts);
static void add_long_options(char *options);
static void add_longopt(const char *name,int has_arg);
static void set_shell(const char *new_shell);
*/
const char *normalize(const char *arg)
{
- static char *BUFFER=NULL;
- const char *argptr=arg;
- char *bufptr;
-
- free(BUFFER);
-
- if (!quote) { /* Just copy arg */
- BUFFER=bb_xstrdup(arg);
- return BUFFER;
- }
-
- /* Each character in arg may take up to four characters in the result:
- For a quote we need a closing quote, a backslash, a quote and an
- opening quote! We need also the global opening and closing quote,
- and one extra character for '\0'. */
- BUFFER=xmalloc(strlen(arg)*4+3);
-
- bufptr=BUFFER;
- *bufptr++='\'';
-
- while (*argptr) {
- if (*argptr == '\'') {
- /* Quote: replace it with: '\'' */
- *bufptr++='\'';
- *bufptr++='\\';
- *bufptr++='\'';
- *bufptr++='\'';
- } else if (shell==TCSH && *argptr=='!') {
- /* Exclamation mark: replace it with: \! */
- *bufptr++='\'';
- *bufptr++='\\';
- *bufptr++='!';
- *bufptr++='\'';
- } else if (shell==TCSH && *argptr=='\n') {
- /* Newline: replace it with: \n */
- *bufptr++='\\';
- *bufptr++='n';
- } else if (shell==TCSH && isspace(*argptr)) {
- /* Non-newline whitespace: replace it with \<ws> */
- *bufptr++='\'';
- *bufptr++='\\';
- *bufptr++=*argptr;
- *bufptr++='\'';
- } else
- /* Just copy */
- *bufptr++=*argptr;
- argptr++;
- }
- *bufptr++='\'';
- *bufptr++='\0';
- return BUFFER;
+ static char *BUFFER=NULL;
+ const char *argptr=arg;
+ char *bufptr;
+
+ free(BUFFER);
+
+ if (!quote) { /* Just copy arg */
+ BUFFER=bb_xstrdup(arg);
+ return BUFFER;
+ }
+
+ /* Each character in arg may take up to four characters in the result:
+ For a quote we need a closing quote, a backslash, a quote and an
+ opening quote! We need also the global opening and closing quote,
+ and one extra character for '\0'. */
+ BUFFER=xmalloc(strlen(arg)*4+3);
+
+ bufptr=BUFFER;
+ *bufptr++='\'';
+
+ while (*argptr) {
+ if (*argptr == '\'') {
+ /* Quote: replace it with: '\'' */
+ *bufptr++='\'';
+ *bufptr++='\\';
+ *bufptr++='\'';
+ *bufptr++='\'';
+ } else if (shell==TCSH && *argptr=='!') {
+ /* Exclamation mark: replace it with: \! */
+ *bufptr++='\'';
+ *bufptr++='\\';
+ *bufptr++='!';
+ *bufptr++='\'';
+ } else if (shell==TCSH && *argptr=='\n') {
+ /* Newline: replace it with: \n */
+ *bufptr++='\\';
+ *bufptr++='n';
+ } else if (shell==TCSH && isspace(*argptr)) {
+ /* Non-newline whitespace: replace it with \<ws> */
+ *bufptr++='\'';
+ *bufptr++='\\';
+ *bufptr++=*argptr;
+ *bufptr++='\'';
+ } else
+ /* Just copy */
+ *bufptr++=*argptr;
+ argptr++;
+ }
+ *bufptr++='\'';
+ *bufptr++='\0';
+ return BUFFER;
}
/*
* Other settings are found in global variables.
*/
int generate_output(char * argv[],int argc,const char *optstr,
- const struct option *longopts)
+ const struct option *longopts)
{
- int exit_code = 0; /* We assume everything will be OK */
- int opt;
- int longindex;
- const char *charptr;
-
- if (quiet_errors) /* No error reporting from getopt(3) */
- opterr=0;
- optind=0; /* Reset getopt(3) */
-
- while ((opt = (alternative?
- getopt_long_only(argc,argv,optstr,longopts,&longindex):
- getopt_long(argc,argv,optstr,longopts,&longindex)))
- != EOF)
- if (opt == '?' || opt == ':' )
- exit_code = 1;
- else if (!quiet_output) {
- if (opt == LONG_OPT) {
- printf(" --%s",longopts[longindex].name);
- if (longopts[longindex].has_arg)
- printf(" %s",
- normalize(optarg?optarg:""));
- } else if (opt == NON_OPT)
- printf(" %s",normalize(optarg));
- else {
- printf(" -%c",opt);
- charptr = strchr(optstr,opt);
- if (charptr != NULL && *++charptr == ':')
- printf(" %s",
- normalize(optarg?optarg:""));
- }
- }
-
- if (! quiet_output) {
- printf(" --");
- while (optind < argc)
- printf(" %s",normalize(argv[optind++]));
- printf("\n");
- }
- return exit_code;
+ int exit_code = 0; /* We assume everything will be OK */
+ int opt;
+ int longindex;
+ const char *charptr;
+
+ if (quiet_errors) /* No error reporting from getopt(3) */
+ opterr=0;
+ optind=0; /* Reset getopt(3) */
+
+ while ((opt = (alternative?
+ getopt_long_only(argc,argv,optstr,longopts,&longindex):
+ getopt_long(argc,argv,optstr,longopts,&longindex)))
+ != EOF)
+ if (opt == '?' || opt == ':' )
+ exit_code = 1;
+ else if (!quiet_output) {
+ if (opt == LONG_OPT) {
+ printf(" --%s",longopts[longindex].name);
+ if (longopts[longindex].has_arg)
+ printf(" %s",
+ normalize(optarg?optarg:""));
+ } else if (opt == NON_OPT)
+ printf(" %s",normalize(optarg));
+ else {
+ printf(" -%c",opt);
+ charptr = strchr(optstr,opt);
+ if (charptr != NULL && *++charptr == ':')
+ printf(" %s",
+ normalize(optarg?optarg:""));
+ }
+ }
+
+ if (! quiet_output) {
+ printf(" --");
+ while (optind < argc)
+ printf(" %s",normalize(argv[optind++]));
+ printf("\n");
+ }
+ return exit_code;
}
-static struct option *long_options=NULL;
-static int long_options_length=0; /* Length of array */
-static int long_options_nr=0; /* Nr of used elements in array */
+static struct option *long_options;
+static int long_options_length; /* Length of array */
+static int long_options_nr; /* Nr of used elements in array */
static const int LONG_OPTIONS_INCR = 10;
#define init_longopt() add_longopt(NULL,0)
/* Register a long option. The contents of name is copied. */
void add_longopt(const char *name,int has_arg)
{
- if (!name) { /* init */
- free(long_options);
- long_options=NULL;
- long_options_length=0;
- long_options_nr=0;
- }
-
- if (long_options_nr == long_options_length) {
- long_options_length += LONG_OPTIONS_INCR;
- long_options=xrealloc(long_options,
- sizeof(struct option) *
- long_options_length);
- }
-
- long_options[long_options_nr].name=NULL;
- long_options[long_options_nr].has_arg=0;
- long_options[long_options_nr].flag=NULL;
- long_options[long_options_nr].val=0;
-
- if (long_options_nr) { /* Not for init! */
- long_options[long_options_nr-1].has_arg=has_arg;
- long_options[long_options_nr-1].flag=NULL;
- long_options[long_options_nr-1].val=LONG_OPT;
- long_options[long_options_nr-1].name=bb_xstrdup(name);
- }
- long_options_nr++;
+ if (!name) { /* init */
+ free(long_options);
+ long_options=NULL;
+ long_options_length=0;
+ long_options_nr=0;
+ }
+
+ if (long_options_nr == long_options_length) {
+ long_options_length += LONG_OPTIONS_INCR;
+ long_options=xrealloc(long_options,
+ sizeof(struct option) *
+ long_options_length);
+ }
+
+ long_options[long_options_nr].name=NULL;
+ long_options[long_options_nr].has_arg=0;
+ long_options[long_options_nr].flag=NULL;
+ long_options[long_options_nr].val=0;
+
+ if (long_options_nr) { /* Not for init! */
+ long_options[long_options_nr-1].has_arg=has_arg;
+ long_options[long_options_nr-1].flag=NULL;
+ long_options[long_options_nr-1].val=LONG_OPT;
+ long_options[long_options_nr-1].name=bb_xstrdup(name);
+ }
+ long_options_nr++;
}
*/
void add_long_options(char *options)
{
- int arg_opt, tlen;
- char *tokptr=strtok(options,", \t\n");
- while (tokptr) {
- arg_opt=no_argument;
+ int arg_opt, tlen;
+ char *tokptr=strtok(options,", \t\n");
+ while (tokptr) {
+ arg_opt=no_argument;
tlen=strlen(tokptr);
- if (tlen > 0) {
- if (tokptr[tlen-1] == ':') {
- if (tlen > 1 && tokptr[tlen-2] == ':') {
- tokptr[tlen-2]='\0';
+ if (tlen > 0) {
+ if (tokptr[tlen-1] == ':') {
+ if (tlen > 1 && tokptr[tlen-2] == ':') {
+ tokptr[tlen-2]='\0';
tlen -= 2;
- arg_opt=optional_argument;
- } else {
- tokptr[tlen-1]='\0';
+ arg_opt=optional_argument;
+ } else {
+ tokptr[tlen-1]='\0';
tlen -= 1;
- arg_opt=required_argument;
- }
- if (tlen == 0)
- bb_error_msg("empty long option after -l or --long argument");
- }
- add_longopt(tokptr,arg_opt);
- }
- tokptr=strtok(NULL,", \t\n");
- }
+ arg_opt=required_argument;
+ }
+ if (tlen == 0)
+ bb_error_msg("empty long option after -l or --long argument");
+ }
+ add_longopt(tokptr,arg_opt);
+ }
+ tokptr=strtok(NULL,", \t\n");
+ }
}
void set_shell(const char *new_shell)
{
- if (!strcmp(new_shell,"bash"))
- shell=BASH;
- else if (!strcmp(new_shell,"tcsh"))
- shell=TCSH;
- else if (!strcmp(new_shell,"sh"))
- shell=BASH;
- else if (!strcmp(new_shell,"csh"))
- shell=TCSH;
- else
- bb_error_msg("unknown shell after -s or --shell argument");
+ if (!strcmp(new_shell,"bash"))
+ shell=BASH;
+ else if (!strcmp(new_shell,"tcsh"))
+ shell=TCSH;
+ else if (!strcmp(new_shell,"sh"))
+ shell=BASH;
+ else if (!strcmp(new_shell,"csh"))
+ shell=TCSH;
+ else
+ bb_error_msg("unknown shell after -s or --shell argument");
}
* 4) Returned for -T
*/
-static struct option longopts[]=
+static const struct option longopts[]=
{
- {"options",required_argument,NULL,'o'},
- {"longoptions",required_argument,NULL,'l'},
- {"quiet",no_argument,NULL,'q'},
- {"quiet-output",no_argument,NULL,'Q'},
- {"shell",required_argument,NULL,'s'},
- {"test",no_argument,NULL,'T'},
- {"unquoted",no_argument,NULL,'u'},
- {"alternative",no_argument,NULL,'a'},
- {"name",required_argument,NULL,'n'},
- {NULL,0,NULL,0}
+ {"options",required_argument,NULL,'o'},
+ {"longoptions",required_argument,NULL,'l'},
+ {"quiet",no_argument,NULL,'q'},
+ {"quiet-output",no_argument,NULL,'Q'},
+ {"shell",required_argument,NULL,'s'},
+ {"test",no_argument,NULL,'T'},
+ {"unquoted",no_argument,NULL,'u'},
+ {"alternative",no_argument,NULL,'a'},
+ {"name",required_argument,NULL,'n'},
+ {NULL,0,NULL,0}
};
/* Stop scanning as soon as a non-option argument is found! */
-static const char *shortopts="+ao:l:n:qQs:Tu";
+static const char shortopts[]="+ao:l:n:qQs:Tu";
int getopt_main(int argc, char *argv[])
{
- const char *optstr = NULL;
- const char *name = NULL;
- int opt;
- int compatible=0;
-
- init_longopt();
-
- if (getenv("GETOPT_COMPATIBLE"))
- compatible=1;
-
- if (argc == 1) {
- if (compatible) {
- /* For some reason, the original getopt gave no error
- when there were no arguments. */
- printf(" --\n");
- return 0;
- } else
- bb_error_msg_and_die("missing optstring argument");
- }
-
- if (argv[1][0] != '-' || compatible) {
- quote=0;
- optstr=xmalloc(strlen(argv[1])+1);
- strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
- argv[1]=argv[0];
- return (generate_output(argv+1,argc-1,optstr,long_options));
- }
-
- while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
- switch (opt) {
- case 'a':
- alternative=1;
- break;
- case 'o':
- free(optstr);
- optstr = optarg;
- break;
- case 'l':
- add_long_options(optarg);
- break;
- case 'n':
- free(name);
- name = optarg;
- break;
- case 'q':
- quiet_errors=1;
- break;
- case 'Q':
- quiet_output=1;
- break;
- case 's':
- set_shell(optarg);
- break;
- case 'T':
- return 4;
- case 'u':
- quote=0;
- break;
- default:
- bb_show_usage();
- }
-
- if (!optstr) {
- if (optind >= argc)
- bb_error_msg_and_die("missing optstring argument");
- else {
- optstr=bb_xstrdup(argv[optind]);
- optind++;
- }
- }
- if (name)
- argv[optind-1]=name;
- else
- argv[optind-1]=argv[0];
+ const char *optstr = NULL;
+ char *name = NULL;
+ int opt;
+ int compatible=0;
+
+ init_longopt();
+
+ if (getenv("GETOPT_COMPATIBLE"))
+ compatible=1;
+
+ if (argc == 1) {
+ if (compatible) {
+ /* For some reason, the original getopt gave no error
+ when there were no arguments. */
+ printf(" --\n");
+ return 0;
+ } else
+ bb_error_msg_and_die("missing optstring argument");
+ }
+
+ if (argv[1][0] != '-' || compatible) {
+ char *s;
+
+ quote=0;
+ s=xmalloc(strlen(argv[1])+1);
+ strcpy(s,argv[1]+strspn(argv[1],"-+"));
+ argv[1]=argv[0];
+ return (generate_output(argv+1,argc-1,s,long_options));
+ }
+
+ while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
+ switch (opt) {
+ case 'a':
+ alternative=1;
+ break;
+ case 'o':
+ optstr = optarg;
+ break;
+ case 'l':
+ add_long_options(optarg);
+ break;
+ case 'n':
+ name = optarg;
+ break;
+ case 'q':
+ quiet_errors=1;
+ break;
+ case 'Q':
+ quiet_output=1;
+ break;
+ case 's':
+ set_shell(optarg);
+ break;
+ case 'T':
+ return 4;
+ case 'u':
+ quote=0;
+ break;
+ default:
+ bb_show_usage();
+ }
+
+ if (!optstr) {
+ if (optind >= argc)
+ bb_error_msg_and_die("missing optstring argument");
+ else optstr=argv[optind++];
+ }
+ if (name)
+ argv[optind-1]=name;
+ else
+ argv[optind-1]=argv[0];
return (generate_output(argv+optind-1,argc-optind+1,optstr,long_options));
}
projects / oweals / busybox.git / blobdiff