diff options
Diffstat (limited to 'crypto/heimdal/lib/sl/sl.c')
| -rw-r--r-- | crypto/heimdal/lib/sl/sl.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/sl/sl.c b/crypto/heimdal/lib/sl/sl.c new file mode 100644 index 0000000..688ca8b --- /dev/null +++ b/crypto/heimdal/lib/sl/sl.c @@ -0,0 +1,223 @@ +/* + * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +RCSID("$Id: sl.c,v 1.25 1999/12/02 16:58:55 joda Exp $"); +#endif + +#include "sl_locl.h" + +static SL_cmd * +sl_match (SL_cmd *cmds, char *cmd, int exactp) +{ + SL_cmd *c, *current = NULL, *partial_cmd = NULL; + int partial_match = 0; + + for (c = cmds; c->name; ++c) { + if (c->func) + current = c; + if (strcmp (cmd, c->name) == 0) + return current; + else if (strncmp (cmd, c->name, strlen(cmd)) == 0 && + partial_cmd != current) { + ++partial_match; + partial_cmd = current; + } + } + if (partial_match == 1 && !exactp) + return partial_cmd; + else + return NULL; +} + +void +sl_help (SL_cmd *cmds, int argc, char **argv) +{ + SL_cmd *c, *prev_c; + + if (argc == 1) { + prev_c = NULL; + for (c = cmds; c->name; ++c) { + if (c->func) { + if(prev_c) + printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "", + prev_c->usage ? "\n" : ""); + prev_c = c; + printf ("%s", c->name); + } else + printf (", %s", c->name); + } + if(prev_c) + printf ("\n\t%s%s", prev_c->usage ? prev_c->usage : "", + prev_c->usage ? "\n" : ""); + } else { + c = sl_match (cmds, argv[1], 0); + if (c == NULL) + printf ("No such command: %s. " + "Try \"help\" for a list of all commands\n", + argv[1]); + else { + printf ("%s\t%s\n", c->name, c->usage); + if(c->help && *c->help) + printf ("%s\n", c->help); + if((++c)->name && c->func == NULL) { + printf ("Synonyms:"); + while (c->name && c->func == NULL) + printf ("\t%s", (c++)->name); + printf ("\n"); + } + } + } +} + +#ifdef HAVE_READLINE + +char *readline(char *prompt); +void add_history(char *p); + +#else + +static char * +readline(char *prompt) +{ + char buf[BUFSIZ]; + printf ("%s", prompt); + fflush (stdout); + if(fgets(buf, sizeof(buf), stdin) == NULL) + return NULL; + if (buf[strlen(buf) - 1] == '\n') + buf[strlen(buf) - 1] = '\0'; + return strdup(buf); +} + +static void +add_history(char *p) +{ +} + +#endif + +int +sl_command(SL_cmd *cmds, int argc, char **argv) +{ + SL_cmd *c; + c = sl_match (cmds, argv[0], 0); + if (c == NULL) + return -1; + return (*c->func)(argc, argv); +} + +struct sl_data { + int max_count; + char **ptr; +}; + +int +sl_make_argv(char *line, int *ret_argc, char ***ret_argv) +{ + char *foo = NULL; + char *p; + int argc, nargv; + char **argv; + + nargv = 10; + argv = malloc(nargv * sizeof(*argv)); + if(argv == NULL) + return ENOMEM; + argc = 0; + + for(p = strtok_r (line, " \t", &foo); + p; + p = strtok_r (NULL, " \t", &foo)) { + if(argc == nargv - 1) { + char **tmp; + nargv *= 2; + tmp = realloc (argv, nargv * sizeof(*argv)); + if (tmp == NULL) { + free(argv); + return ENOMEM; + } + argv = tmp; + } + argv[argc++] = p; + } + argv[argc] = NULL; + *ret_argc = argc; + *ret_argv = argv; + return 0; +} + +/* return values: 0 on success, -1 on fatal error, or return value of command */ +int +sl_command_loop(SL_cmd *cmds, char *prompt, void **data) +{ + int ret = 0; + char *buf; + int argc; + char **argv; + + ret = 0; + buf = readline(prompt); + if(buf == NULL) + return 1; + + if(*buf) + add_history(buf); + ret = sl_make_argv(buf, &argc, &argv); + if(ret) { + fprintf(stderr, "sl_loop: out of memory\n"); + free(buf); + return -1; + } + if (argc >= 1) { + ret = sl_command(cmds, argc, argv); + if(ret == -1) { + printf ("Unrecognized command: %s\n", argv[0]); + ret = 0; + } + } + free(buf); + free(argv); + return ret; +} + +int +sl_loop(SL_cmd *cmds, char *prompt) +{ + void *data = NULL; + int ret; + while((ret = sl_command_loop(cmds, prompt, &data)) == 0) + ; + return ret; +} |
