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100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* CMDLINE.H - header file for command line processing functions
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*/
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/* Copyright © 1992, 1993, 2001 Kenneth L. Harrenstien
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** Copyright © 2017 Olaf Seibert
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** All Rights Reserved
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**
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** This file is part of the KLH10 Distribution. Use, modification, and
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** re-distribution is permitted subject to the terms in the file
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** named "LICENSE", which contains the full text of the legal notices
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** and should always accompany this Distribution.
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**
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** This software is provided "AS IS" with NO WARRANTY OF ANY KIND.
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**
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** This notice (including the copyright and warranty disclaimer)
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** must be included in all copies or derivations of this software.
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*/
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#ifndef CMDBUFLEN
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# define CMDBUFLEN 512
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#endif
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#ifndef CMDMAXARG
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# define CMDMAXARG 10
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#endif
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struct cmd_s {
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struct cmkey_s *cmd_keys;/* Command table */
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int cmd_flags; /* State flags */
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char *cmd_prm; /* Pointer to command prompt */
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char *cmd_buf; /* Pointer to start of buffer */
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size_t cmd_blen; /* Size of buffer */
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int cmd_left; /* # chars left for current cmd being input */
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char *cmd_inp; /* Input deposit pointer */
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char *cmd_rdp; /* Readout pointer */
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size_t cmd_rleft; /* # chars left to read */
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/* Provide all command routines with their desired arguments */
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char *cmd_arglin; /* Original pointer to start of args on line */
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int cmd_argc; /* # of tokens */
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char *cmd_argv[CMDMAXARG+1]; /* Array of token pointers */
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char *cmd_tdp; /* Next free loc in token buffer */
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size_t cmd_tleft; /* # chars free in token buffer */
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char cmd_tokbuf[CMDBUFLEN+CMDMAXARG];
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#if 0
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char *cmd_wbf; /* Pointer to work buffer */
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size_t cmd_wblen; /* Size in chars */
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char *cmd_wbp; /* Current deposit ptr */
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size_t cmd_wbleft; /* # chars left */
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#endif
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};
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#define CMDF_ACTIVE 01 /* Activation char seen, execute accumulated cmd */
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#define CMDF_INACCUM 02 /* In accumulation phase */
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#define CMDF_NOPRM 040 /* Disable prompt */
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struct cmkey_s {
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char *cmk_key;
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union cmnode *cmk_p;
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};
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struct cmrtn_s {
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void (*cmr_vect)(struct cmd_s *); /* Function to call */
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int cmr_flgs; /* Misc flags */
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char *cmr_synt; /* Arg syntax */
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char *cmr_help; /* Short one-line help */
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char *cmr_desc; /* Long description */
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};
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#define CMRF_NOARG 01 /* Command takes no args */
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#define CMRF_TOKS 010 /* Command wants whole line tokenized, via cm */
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#define CMRF_TLIN 020 /* Command wants overall line arg, via cm */
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#define CMRF_CMPTR 040 /* Command wants just cmd state ptr */
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union cmnode { /* All possible nodes for a keyword */
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struct cmrtn_s cmn_rtn;
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};
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/* Predeclarations */
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void cmdinit(struct cmd_s *, struct cmkey_s *, char *, char *, size_t);
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int cmdexec(struct cmd_s *);
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int cmdaccum(struct cmd_s *);
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struct cmkey_s *cmdkeylookup(char *, struct cmkey_s *, struct cmkey_s **);
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char *cmdlsetup(struct cmd_s *);
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char *cmdlcopy(struct cmd_s *cm, char *line);
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void fc_gques(struct cmd_s *cm);
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void fc_ghelp(struct cmd_s *cm);
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/* CMDDEF is used to define top-level commands. It does not accumulate
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** them into a table (C is far too puny for that) but gathers together
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** various information that a higher-level table can then point to.
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*/
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#define CMDDEF(deflab, func, flgs, argsyn, minihelp, longdesc) \
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static void func(struct cmd_s *); \
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static struct cmrtn_s deflab = { func, flgs, argsyn, minihelp, longdesc };
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#define KEYSBEGIN(name) struct cmkey_s name[] = {
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#define KEYDEF(key,nod) { key, (union cmnode *)(&nod) },
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#define KEYSEND { 0, 0 } };
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