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-rw-r--r--src/internal/argv/argv.h876
1 files changed, 876 insertions, 0 deletions
diff --git a/src/internal/argv/argv.h b/src/internal/argv/argv.h
new file mode 100644
index 0000000..9cb1e02
--- /dev/null
+++ b/src/internal/argv/argv.h
@@ -0,0 +1,876 @@
+/****************************************************************************/
+/* argv.h: a thread-safe argument vector parser and usage screen generator */
+/* Copyright (C) 2015 Z. Gilboa */
+/* Released under the Standard MIT License; see COPYING.SOFORT. */
+/* This file is (also) part of sofort: portable software project template. */
+/****************************************************************************/
+
+#ifndef ARGV_H
+#define ARGV_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define ARGV_VERBOSITY_NONE 0x00
+#define ARGV_VERBOSITY_ERRORS 0x01
+#define ARGV_VERBOSITY_STATUS 0x02
+#define ARGV_CLONE_VECTOR 0x80
+
+enum argv_optarg {
+ ARGV_OPTARG_NONE,
+ ARGV_OPTARG_REQUIRED,
+ ARGV_OPTARG_OPTIONAL,
+};
+
+enum argv_mode {
+ ARGV_MODE_SCAN,
+ ARGV_MODE_COPY,
+};
+
+enum argv_error {
+ ARGV_ERROR_OK,
+ ARGV_ERROR_INTERNAL,
+ ARGV_ERROR_SHORT_OPTION,
+ ARGV_ERROR_LONG_OPTION,
+ ARGV_ERROR_OPTARG_NONE,
+ ARGV_ERROR_OPTARG_REQUIRED,
+ ARGV_ERROR_OPTARG_PARADIGM,
+};
+
+struct argv_option {
+ const char * long_name;
+ const char short_name;
+ int tag;
+ enum argv_optarg optarg;
+ const char * paradigm;
+ const char * argname;
+ const char * description;
+};
+
+struct argv_entry {
+ const char * arg;
+ int tag;
+ bool fopt;
+ bool fval;
+ bool fnoscan;
+ enum argv_error errcode;
+};
+
+struct argv_meta {
+ const char ** argv;
+ struct argv_entry * entries;
+};
+
+struct argv_meta_impl {
+ const char ** argv;
+ char * strbuf;
+ struct argv_meta meta;
+};
+
+struct argv_ctx {
+ int flags;
+ int mode;
+ int nentries;
+ enum argv_error errcode;
+ const char * errch;
+ const struct argv_option * erropt;
+ const char * program;
+};
+
+static const char * argv_program_name(const char *);
+
+static void argv_usage(
+ FILE *,
+ const char * header,
+ const struct argv_option[],
+ const char * mode);
+
+static struct argv_meta * argv_get(
+ const char **,
+ const struct argv_option[],
+ int flags);
+
+static void argv_free(struct argv_meta *);
+
+
+
+
+/*------------------------------------*/
+/* implementation of static functions */
+/*------------------------------------*/
+
+#ifdef ARGV_DRIVER
+
+static const struct argv_option * argv_short_option(
+ const char * ch,
+ const struct argv_option options[],
+ struct argv_entry * entry)
+{
+ const struct argv_option * option;
+
+ for (option=options; option->long_name || option->short_name; option++) {
+ if (option->short_name == *ch) {
+ entry->tag = option->tag;
+ entry->fopt = true;
+ return option;
+ }
+ }
+
+ return 0;
+}
+
+static const struct argv_option * argv_long_option(
+ const char * ch,
+ const struct argv_option options[],
+ struct argv_entry * entry)
+{
+ const struct argv_option * option;
+ const char * arg;
+ size_t len;
+
+ for (option=options; option->long_name || option->short_name; option++) {
+ len = option->long_name ? strlen(option->long_name) : 0;
+
+ if (len && !(strncmp(option->long_name,ch,len))) {
+ arg = ch + len;
+
+ if (!*arg || (*arg == '=')) {
+ entry->tag = option->tag;
+ entry->fopt = true;
+ return option;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static inline bool is_short_option(const char * arg)
+{
+ return (arg[0]=='-') && arg[1] && (arg[1]!='-');
+}
+
+static inline bool is_long_option(const char * arg)
+{
+ return (arg[0]=='-') && (arg[1]=='-') && arg[2];
+}
+
+static inline bool is_last_option(const char * arg)
+{
+ return (arg[0]=='-') && (arg[1]=='-') && !arg[2];
+}
+
+static inline bool is_arg_in_paradigm(const char * arg, const char * paradigm)
+{
+ size_t len;
+ const char * ch;
+
+ for (ch=paradigm,len=strlen(arg); ch; ) {
+ if (!strncmp(arg,ch,len)) {
+ if (!*(ch += len))
+ return true;
+ else if (*ch == '|')
+ return true;
+ }
+
+ if ((ch = strchr(ch,'|')))
+ ch++;
+ }
+
+ return false;
+}
+
+static inline const struct argv_option * option_from_tag(
+ const struct argv_option options[],
+ int tag)
+{
+ const struct argv_option * option;
+
+ for (option=options; option->short_name || option->long_name; option++)
+ if (option->tag == tag)
+ return option;
+ return 0;
+}
+
+static void argv_scan(
+ const char ** argv,
+ const struct argv_option options[],
+ struct argv_ctx * ctx,
+ struct argv_meta * meta)
+{
+ const char ** parg;
+ const char * ch;
+ const char * val;
+ const struct argv_option * option;
+ struct argv_entry entry;
+ struct argv_entry * mentry;
+ enum argv_error ferror;
+ bool fval;
+ bool fnext;
+ bool fshort;
+ bool fnoscan;
+
+ argv++;
+ parg = argv;
+ ch = *parg;
+ ferror = ARGV_ERROR_OK;
+ fshort = false;
+ fnoscan = false;
+ fval = false;
+ mentry = meta ? meta->entries : 0;
+
+ while (ch && (ferror == ARGV_ERROR_OK)) {
+ option = 0;
+
+ if (fnoscan)
+ fval = true;
+
+ else if (is_last_option(ch))
+ fnoscan = true;
+
+ else if ((fshort || is_short_option(ch))) {
+ if (!fshort)
+ ch++;
+
+ if ((option = argv_short_option(ch,options,&entry))) {
+ if (ch[1]) {
+ ch++;
+ fnext = false;
+ fshort = (option->optarg == ARGV_OPTARG_NONE);
+ } else {
+ parg++;
+ ch = *parg;
+ fnext = true;
+ fshort = false;
+ }
+
+ if (option->optarg == ARGV_OPTARG_NONE) {
+ if (!fnext && ch && (*ch == '-'))
+ ferror = ARGV_ERROR_OPTARG_NONE;
+ else
+ fval = false;
+ } else if (!fnext)
+ fval = true;
+ else if (option->optarg == ARGV_OPTARG_REQUIRED) {
+ if (ch && is_short_option(ch))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (ch && is_long_option(ch))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (ch && is_last_option(ch))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (ch)
+ fval = true;
+ else
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ } else {
+ /* ARGV_OPTARG_OPTIONAL */
+ if (ch && is_short_option(ch))
+ fval = false;
+ else if (ch && is_long_option(ch))
+ fval = false;
+ else if (ch && is_last_option(ch))
+ fval = false;
+ else
+ fval = ch;
+ }
+ } else
+ ferror = ARGV_ERROR_SHORT_OPTION;
+
+ } else if ((is_long_option(ch))) {
+ if ((option = argv_long_option(ch+=2,options,&entry))) {
+ val = ch + strlen(option->long_name);
+
+ /* val[0] is either '=' or '\0' */
+ if (!val[0]) {
+ parg++;
+ ch = *parg;
+ }
+
+ if (option->optarg == ARGV_OPTARG_NONE) {
+ if (val[0]) {
+ ferror = ARGV_ERROR_OPTARG_NONE;
+ ctx->errch = val + 1;
+ } else
+ fval = false;
+ } else if (val[0] && !val[1])
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (val[0] && val[1]) {
+ fval = true;
+ ch = ++val;
+ } else if (option->optarg == ARGV_OPTARG_REQUIRED) {
+ if (!val[0] && !*parg)
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (*parg && is_short_option(*parg))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (*parg && is_long_option(*parg))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else if (*parg && is_last_option(*parg))
+ ferror = ARGV_ERROR_OPTARG_REQUIRED;
+ else
+ fval = true;
+ } else {
+ /* ARGV_OPTARG_OPTIONAL */
+ if (!val[0] && !*parg)
+ fval = false;
+ if (*parg && is_short_option(*parg))
+ fval = false;
+ else if (*parg && is_long_option(*parg))
+ fval = false;
+ else if (*parg && is_last_option(*parg))
+ fval = false;
+ else
+ fval = *parg;
+ }
+ } else
+ ferror = ARGV_ERROR_LONG_OPTION;
+ }
+
+ if (ferror == ARGV_ERROR_OK)
+ if (option && fval && option->paradigm)
+ if (!is_arg_in_paradigm(ch,option->paradigm))
+ ferror = ARGV_ERROR_OPTARG_PARADIGM;
+
+ if (ferror != ARGV_ERROR_OK) {
+ ctx->errcode = ferror;
+ ctx->errch = ctx->errch ? ctx->errch : ch;
+ ctx->erropt = option;
+ return;
+ } else if (ctx->mode == ARGV_MODE_SCAN) {
+ if (!fnoscan)
+ ctx->nentries++;
+ else if (fval)
+ ctx->nentries++;
+
+ if (fval || !option) {
+ parg++;
+ ch = *parg;
+ }
+ } else if (ctx->mode == ARGV_MODE_COPY) {
+ if (fnoscan) {
+ if (fval) {
+ mentry->arg = ch;
+ mentry->fnoscan = true;
+ mentry++;
+ }
+
+ parg++;
+ ch = *parg;
+ } else if (option) {
+ mentry->arg = fval ? ch : 0;
+ mentry->tag = option->tag;
+ mentry->fopt = true;
+ mentry->fval = fval;
+ mentry++;
+
+ if (fval) {
+ parg++;
+ ch = *parg;
+ }
+ } else {
+ mentry->arg = ch;
+ mentry++;
+ parg++;
+ ch = *parg;
+ }
+ }
+ }
+}
+
+static const char * argv_program_name(const char * program_path)
+{
+ const char * ch;
+
+ if (program_path) {
+ if ((ch = strrchr(program_path,'/')))
+ return *(++ch) ? ch : 0;
+
+ if ((ch = strrchr(program_path,'\\')))
+ return *(++ch) ? ch : 0;
+ }
+
+ return program_path;
+}
+
+static void argv_show_error(struct argv_ctx * ctx)
+{
+ fprintf(stderr,"%s: error: ",ctx->program);
+
+ switch (ctx->errcode) {
+ case ARGV_ERROR_SHORT_OPTION:
+ fprintf(stderr,"'%c' is not a valid short option\n",*ctx->errch);
+ break;
+
+ case ARGV_ERROR_LONG_OPTION:
+ fprintf(stderr,"'--%s' is not a valid long option\n",ctx->errch);
+ break;
+
+ case ARGV_ERROR_OPTARG_NONE:
+ fprintf(stderr,"'%s' is not a valid option value for [%s%c%s%s%s] (option values may not be specified)\n",
+ ctx->errch,
+ ctx->erropt->short_name ? "-" : "",
+ ctx->erropt->short_name,
+ ctx->erropt->short_name ? "," : "",
+ ctx->erropt->long_name ? "--" : "",
+ ctx->erropt->long_name);
+ break;
+
+ case ARGV_ERROR_OPTARG_REQUIRED:
+ fprintf(stderr,"option [%s%c%s%s%s] requires %s %s%s%s\n",
+ ctx->erropt->short_name ? "-" : "",
+ ctx->erropt->short_name,
+ ctx->erropt->short_name ? "," : "",
+ ctx->erropt->long_name ? "--" : "",
+ ctx->erropt->long_name,
+ ctx->erropt->paradigm ? "one of the following values:" : "a value",
+ ctx->erropt->paradigm ? "{" : "",
+ ctx->erropt->paradigm ? ctx->erropt->paradigm : "",
+ ctx->erropt->paradigm ? "}" : "");
+ break;
+
+ case ARGV_ERROR_OPTARG_PARADIGM:
+ fprintf(stderr,"'%s' is not a valid option value for [%s%c%s%s%s]={%s}\n",
+ ctx->errch,
+ ctx->erropt->short_name ? "-" : "",
+ ctx->erropt->short_name,
+ ctx->erropt->short_name ? "," : "",
+ ctx->erropt->long_name ? "--" : "",
+ ctx->erropt->long_name,
+ ctx->erropt->paradigm);
+ break;
+
+ case ARGV_ERROR_INTERNAL:
+ fputs("internal error",stderr);
+ break;
+
+ default:
+ break;
+ }
+}
+
+static void argv_show_status(
+ const struct argv_option options[],
+ struct argv_ctx * ctx,
+ struct argv_meta * meta)
+{
+ int argc;
+ const char ** argv;
+ struct argv_entry * entry;
+ const struct argv_option * option;
+ char short_name[2] = {0};
+ const char * space = "";
+
+ fputs("\n\nconcatenated command line:\n",stderr);
+ for (argv=meta->argv; *argv; argv++) {
+ fprintf(stderr,"%s%s",space,*argv);
+ space = " ";
+ }
+
+ fputs("\n\nargument vector:\n",stderr);
+ for (argc=0,argv=meta->argv; *argv; argc++,argv++)
+ fprintf(stderr,"argv[%d]: %s\n",argc,*argv);
+
+ fputs("\n\nparsed entries:\n",stderr);
+ for (entry=meta->entries; entry->arg || entry->fopt; entry++)
+ if (entry->fopt) {
+ option = option_from_tag(options,entry->tag);
+ short_name[0] = option->short_name;
+
+ if (entry->fval)
+ fprintf(stderr,"[-%s,--%s] := %s\n",
+ short_name,option->long_name,entry->arg);
+ else
+ fprintf(stderr,"[-%s,--%s]\n",
+ short_name,option->long_name);
+ } else
+ fprintf(stderr,"<program arg> := %s\n",entry->arg);
+
+ fputs("\n\n",stderr);
+}
+
+static struct argv_meta * argv_free_impl(struct argv_meta_impl * imeta)
+{
+ if (imeta->argv)
+ free(imeta->argv);
+
+ if (imeta->strbuf)
+ free(imeta->strbuf);
+
+ if (imeta->meta.entries)
+ free(imeta->meta.entries);
+
+ free(imeta);
+ return 0;
+}
+
+static struct argv_meta * argv_alloc(const char ** argv, struct argv_ctx * ctx)
+{
+ struct argv_meta_impl * imeta;
+ const char ** vector;
+ char * dst;
+ size_t size;
+ int argc;
+ int i;
+
+ if (!(imeta = calloc(sizeof(*imeta),1)))
+ return 0;
+
+ if (ctx->flags & ARGV_CLONE_VECTOR) {
+ for (vector=argv,argc=0,size=0; *vector; vector++) {
+ size += strlen(*vector) + 1;
+ argc++;
+ }
+
+ if (!(imeta->argv = calloc(sizeof(char *),argc+1)))
+ return argv_free_impl(imeta);
+ else if (!(imeta->strbuf = calloc(size+1,1)))
+ return argv_free_impl(imeta);
+
+ for (i=0,dst=imeta->strbuf; i<argc; i++) {
+ strcpy(dst,argv[i]);
+ imeta->argv[i] = dst;
+ dst += strlen(dst)+1;
+ }
+
+ imeta->meta.argv = imeta->argv;
+ } else
+ imeta->meta.argv = argv;
+
+ if (!(imeta->meta.entries = calloc(sizeof(struct argv_entry),ctx->nentries+1)))
+ return argv_free_impl(imeta);
+ else
+ return &imeta->meta;
+}
+
+static struct argv_meta * argv_get(
+ const char * argv[],
+ const struct argv_option options[],
+ int flags)
+{
+ struct argv_meta * meta;
+ struct argv_ctx ctx = {flags,ARGV_MODE_SCAN,0,0,0,0};
+
+ argv_scan(argv,options,&ctx,0);
+
+ if (ctx.errcode != ARGV_ERROR_OK) {
+ if (!ctx.program)
+ ctx.program = argv_program_name(argv[0]);
+
+ if (ctx.flags & ARGV_VERBOSITY_ERRORS)
+ argv_show_error(&ctx);
+
+ return 0;
+ }
+
+ if (!(meta = argv_alloc(argv,&ctx)))
+ return 0;
+
+ ctx.mode = ARGV_MODE_COPY;
+ argv_scan(meta->argv,options,&ctx,meta);
+
+ if (ctx.errcode != ARGV_ERROR_OK) {
+ if (!ctx.program)
+ ctx.program = argv[0];
+
+ ctx.errcode = ARGV_ERROR_INTERNAL;
+ argv_show_error(&ctx);
+ argv_free(meta);
+
+ return 0;
+ }
+
+ if (ctx.flags & ARGV_VERBOSITY_STATUS)
+ argv_show_status(options,&ctx,meta);
+
+ return meta;
+}
+
+static void argv_free(struct argv_meta * xmeta)
+{
+ struct argv_meta_impl * imeta;
+ uintptr_t addr;
+
+ if (xmeta) {
+ addr = (uintptr_t)xmeta - offsetof(struct argv_meta_impl,meta);
+ imeta = (struct argv_meta_impl *)addr;
+ argv_free_impl(imeta);
+ }
+}
+
+static void argv_usage(
+ FILE * file,
+ const char * header,
+ const struct argv_option options[],
+ const char * mode)
+{
+ const struct argv_option * option;
+ bool fshort,flong;
+ bool fnewline;
+ size_t len,optlen;
+ size_t paralen,rparalen,mparalen;
+ size_t desclen,rdesclen;
+
+ char * para;
+ char * next_para;
+ char * desc;
+ char * next_desc;
+ char * paradigm;
+ char * buf;
+ size_t buflen;
+ const char * sdescription;
+ const char * sargname;
+
+ const char indent[] = " ";
+ const int rblen = sizeof("}") - sizeof(char);
+ const int rbblen = sizeof("{]") - sizeof(char);
+ const int brcklen= sizeof("[]") - sizeof(char);
+ const int solen = sizeof("-") - sizeof(char);
+ const int lolen = sizeof("--") - sizeof(char);
+ const int slolen = sizeof("-X,--") - sizeof(char);
+
+ fshort = mode ? !strcmp(mode,"short") : 0;
+ flong = fshort ? 0 : mode && !strcmp(mode,"long");
+
+ if (header)
+ fprintf(stdout,"%s",header);
+
+ for (option=options,optlen=0,paralen=0; option->short_name || option->long_name; option++) {
+ if (fshort)
+ len = option->short_name ? sizeof(char) + solen : 0;
+ else if (flong)
+ len = option->long_name ? strlen(option->long_name) + lolen : 0;
+ else
+ len = option->long_name ? strlen(option->long_name) + slolen : 0;
+
+ if (len) {
+ if (len > optlen)
+ optlen = len;
+
+ if (option->paradigm)
+ len = strlen(option->paradigm) + strlen("{}");
+ else if (option->argname)
+ len = strlen(option->argname);
+ else if (option->optarg != ARGV_OPTARG_NONE)
+ len = strlen("<val>");
+
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ len += strlen("[]");
+
+ if (len > paralen)
+ paralen = len;
+ }
+ }
+
+ optlen += 8;
+ optlen &= (~7);
+
+ if (paralen) {
+ paralen += (8);
+ paralen &= (~7);
+ mparalen = paralen + 2*rbblen;
+
+ if (optlen + paralen > 64)
+ paralen = 32;
+ }
+
+ /* account for ' ','\t', try to fit in 80 or 96 columns */
+ if (optlen+paralen+2+8 < 80-32)
+ desclen = 80 - (optlen+paralen+2+8);
+ else if (optlen+paralen+2+8 < 96-32)
+ desclen = 96 - (optlen+paralen+2+8);
+ else
+ desclen = 32;
+
+ paradigm = next_para = buf = 0;
+ fnewline = false;
+ rparalen = 0;
+ mparalen = 0;
+
+ for (option=options,buflen=0,rdesclen=1; option->short_name || option->long_name; option++) {
+ if (option->paradigm) {
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ rparalen = strlen(option->paradigm) - 2*rbblen;
+ else
+ rparalen = strlen(option->paradigm) - 2*rblen;
+ }
+
+ sdescription = option->description ? option->description : "";
+ sargname = option->argname ? option->argname : "";
+
+ if (option->paradigm)
+ rdesclen = snprintf(buf,buflen,sdescription,option->paradigm);
+ else
+ rdesclen = snprintf(buf,buflen,sdescription,sargname);
+
+ if (fnewline)
+ (void)0;
+
+ if ((rparalen > paralen) || (rdesclen > desclen)) {
+ if (!fnewline) {
+ (void)0;
+ fnewline = true;
+ }
+ } else
+ fnewline = false;
+
+ if (fshort)
+ fprintf(file,"%s-%-*c",indent,(int)(optlen-solen),option->short_name);
+ else if (flong)
+ fprintf(file,"%s--%-*s",indent,(int)(optlen-lolen),option->long_name);
+ else {
+ if (option->short_name && option->long_name)
+ fprintf(file,"%s-%c,--%-*s",indent,option->short_name,(int)(optlen-slolen),option->long_name);
+ else if (option->short_name)
+ fprintf(file,"%s-%-*c",indent,(int)(optlen-solen),option->short_name);
+ else
+ fprintf(file,"%s%3s--%-*s",indent,"",(int)(optlen-slolen),option->long_name);
+ }
+
+ if (rdesclen > buflen) {
+ if (buf) {
+ free(buf);
+ buf = 0;
+ }
+
+ len = rdesclen + 512;
+ len &= (~511);
+
+ if ((buf = calloc(len,1))) {
+ buflen = len;
+
+ if (option->paradigm)
+ rdesclen = snprintf(buf,buflen,option->description,option->paradigm);
+ else
+ rdesclen = snprintf(buf,buflen,option->description,option->argname);
+ } else {
+ buflen = 0;
+ continue;
+ }
+ }
+
+ if (option->paradigm && (rparalen <= paralen)) {
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ fprintf(file,"[{%s}]%-*c",option->paradigm,(int)(paralen-strlen(option->paradigm)-2*rbblen),' ');
+ else
+ fprintf(file,"{%s}%-*c",option->paradigm,(int)(paralen-strlen(option->paradigm)-rbblen),' ');
+ para = (char *)0;
+ } else if (option->paradigm) {
+ if (!paradigm && !(paradigm = calloc(mparalen,1))) {
+ fputc('\n',file);
+ continue;
+ } else
+ para = strcpy(paradigm,option->paradigm);
+
+ if (option->optarg == ARGV_OPTARG_OPTIONAL) {
+ fputs("[{",file);
+ rparalen = paralen - rbblen;
+ } else {
+ fputc('{',file);
+ rparalen = paralen - rblen;
+ }
+ } else if (option->argname) {
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ fprintf(file,"[%s]%-*c",option->argname,(int)(paralen-strlen(option->argname)-brcklen),' ');
+ else
+ fprintf(file,"%s%-*c",option->argname,(int)(paralen-strlen(option->argname)),' ');
+ para = (char *)0;
+ } else {
+ fprintf(file,"%-*c",(int)paralen,' ');
+ para = (char *)0;
+ }
+
+
+ if (!para && option->description && rdesclen <= desclen) {
+ fputc('\t',file);
+ fputs(buf,file);
+ desc = (char *)0;
+ } else if (option->description)
+ desc = buf;
+ else
+ desc = (char *)0;
+
+ while (para || desc) {
+ if (para) {
+ for (next_para=para+rparalen-1; (next_para>para) && (*next_para!='|'); )
+ next_para--;
+
+ if (para > paradigm) {
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ fputs(" ",file);
+ else
+ fputc(' ',file);
+ }
+
+ if (*next_para != '|') {
+ fprintf(file,"%s",para);
+ para = (char *)0;
+ } else if (next_para > para) {
+ *next_para = '\0';
+ fprintf(file,"%-*s",(int)rparalen,para);
+ *next_para = '|';
+ para = next_para;
+ rparalen = strlen(para);
+
+ /* 2*rbblen,2*rblen, etc.: account for indentation */
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ rparalen = (rparalen+2*rbblen > paralen) ? paralen-rbblen : rparalen;
+ else
+ rparalen = (rparalen+2*rblen > paralen) ? paralen-rblen : rparalen;
+ } else {
+ if (option->optarg == ARGV_OPTARG_OPTIONAL)
+ fprintf(file,"%s}]%-*c",para,(int)(paralen-strlen(para)-rbblen),' ');
+ else
+ fprintf(file,"%s}%-*c",para,(int)(paralen-strlen(para)-rblen),' ');
+ para = (char *)0;
+ }
+ } else if (desc > buf)
+ fprintf(file,"%-*c",(int)paralen,' ');
+
+ if (desc) {
+ if (desc > buf)
+ fputs("\t ",file);
+ else
+ fputc('\t',file);
+
+ if ((rdesclen = strlen(desc)+(desc>buf)) <= desclen) {
+ fputs(desc,file);
+ desc = (char *)0;
+ } else {
+ for (next_desc=desc+desclen-1; (next_desc>desc) && (*next_desc!=' ') && (*next_desc!='\n'); )
+ next_desc--;
+
+ if ((*next_desc != ' ') && (*next_desc!='\n')) {
+ fputs(desc,file);
+ desc = (char *)0;
+ } else if (next_desc > desc) {
+ *next_desc = '\0';
+ fputs(desc,file);
+ desc = ++next_desc;
+ } else {
+ fputs(desc,file);
+ desc = (char *)0;
+ }
+ }
+ }
+
+ if (para || desc)
+ fprintf(file,"\n%s%-*c",indent,(int)optlen,' ');
+ }
+
+ fputc('\n',file);
+ }
+
+ if (paradigm)
+ free(paradigm);
+
+ if (buf)
+ free(buf);
+}
+
+#endif
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 00:03:50 +0000