diff options
Diffstat (limited to 'support/popthelp.c')
| -rw-r--r-- | support/popthelp.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/support/popthelp.c b/support/popthelp.c deleted file mode 100644 index 326f0ae..0000000 --- a/support/popthelp.c +++ /dev/null @@ -1,242 +0,0 @@ -#include <ctype.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "popt.h" -#include "poptint.h" - -static void displayArgs(poptContext con, int key, const char * arg, - void * data) { - if (key == '?') - poptPrintHelp(con, stderr, 0); - else - poptPrintUsage(con, stderr, 0); - exit(0); -} - -struct poptOption poptHelpOptions[] = { - { NULL, '\0', POPT_ARG_CALLBACK, &displayArgs, '\0', NULL }, - { "help", '?', 0, NULL, '?', "Show this help message" }, - { "usage", '\0', 0, NULL, 'u', "Display brief usage message" }, - { NULL, '\0', 0, NULL, 0 } -} ; - -static void singleOptionHelp(FILE * f, int maxLeftCol, - const struct poptOption * opt) { - int indentLength = maxLeftCol + 5; - int lineLength = 79 - indentLength; - const char * help = opt->descrip; - int helpLength; - const char * ch; - char format[10]; - char * left = alloca(maxLeftCol + 1); - - *left = '\0'; - if (opt->longName && opt->shortName) - sprintf(left, "-%c, --%s", opt->shortName, opt->longName); - else if (opt->shortName) - sprintf(left, "-%c", opt->shortName); - else if (opt->longName) - sprintf(left, "--%s", opt->longName); - if (!*left) return ; - if (opt->argDescrip) { - strcat(left, "="); - strcat(left, opt->argDescrip); - } - - if (help) - fprintf(f," %-*s ", maxLeftCol, left); - else { - fprintf(f," %s\n", left); - return; - } - - helpLength = strlen(help); - while (helpLength > lineLength) { - ch = help + lineLength - 1; - while (ch > help && !isspace(*ch)) ch--; - if (ch == help) break; /* give up */ - while (ch > (help + 1) && isspace(*ch)) ch--; - ch++; - - sprintf(format, "%%.%ds\n%%%ds", (int) (ch - help), indentLength); - fprintf(f, format, help, " "); - help = ch; - while (isspace(*help) && *help) help++; - helpLength = strlen(help); - } - - if (helpLength) fprintf(f, "%s\n", help); -} - -static int maxArgWidth(const struct poptOption * opt) { - int max = 0; - int this; - - while (opt->longName || opt->shortName || opt->arg) { - if (opt->argInfo == POPT_ARG_INCLUDE_TABLE) { - this = maxArgWidth(opt->arg); - } else { - this = opt->shortName ? 2 : 0; - if (opt->longName) { - if (this) this += 2; - this += strlen(opt->longName) + 2; - } - - if (opt->argDescrip) - this += strlen(opt->argDescrip) + 1; - } - - if (this > max) max = this; - - opt++; - } - - return max; -} - -static void singleTableHelp(FILE * f, const struct poptOption * table, - int left) { - const struct poptOption * opt; - - opt = table; - while (opt->longName || opt->shortName || opt->arg) { - if (opt->longName || opt->shortName) - singleOptionHelp(f, left, opt); - opt++; - } - - opt = table; - while (opt->longName || opt->shortName || opt->arg) { - if (opt->argInfo == POPT_ARG_INCLUDE_TABLE) { - if (opt->descrip) - fprintf(f, "\n%s\n", opt->descrip); - singleTableHelp(f, opt->arg, left); - } - opt++; - } -} - -static int showHelpIntro(poptContext con, FILE * f) { - int len = 6; - char * fn; - - fprintf(f, "Usage:"); - if (!(con->flags & POPT_CONTEXT_KEEP_FIRST)) { - fn = con->optionStack->argv[0]; - if (strchr(fn, '/')) fn = strchr(fn, '/') + 1; - fprintf(f, " %s", fn); - len += strlen(fn) + 1; - } - - return len; -} - -void poptPrintHelp(poptContext con, FILE * f, int flags) { - int leftColWidth; - - showHelpIntro(con, f); - if (con->otherHelp) - fprintf(f, " %s\n", con->otherHelp); - else - fprintf(f, " [OPTION...]\n"); - - leftColWidth = maxArgWidth(con->options); - singleTableHelp(f, con->options, leftColWidth); -} - -static int singleOptionUsage(FILE * f, int cursor, - const struct poptOption * opt) { - int len = 3; - char shortStr[2]; - const char * item = shortStr; - - if (opt->shortName) { - if (!opt->argInfo) return cursor; /* we did these already */ - len++; - *shortStr = opt->shortName; - shortStr[1] = '\0'; - } else if (opt->longName) { - len += 1 + strlen(opt->longName); - item = opt->longName; - } - - if (len == 3) return cursor; - - if (opt->argDescrip) - len += strlen(opt->argDescrip) + 1; - - if ((cursor + len) > 79) { - fprintf(f, "\n "); - cursor = 7; - } - - fprintf(f, " [-%s%s%s%s]", opt->shortName ? "" : "-", item, - opt->argDescrip ? "=" : "", - opt->argDescrip ? opt->argDescrip : ""); - - return cursor + len + 1; -} - -int singleTableUsage(FILE * f, int cursor, const struct poptOption * table) { - const struct poptOption * opt; - - opt = table; - while (opt->longName || opt->shortName || opt->arg) { - if (opt->longName || opt->shortName) - cursor = singleOptionUsage(f, cursor, opt); - else if (opt->argInfo == POPT_ARG_INCLUDE_TABLE) - cursor = singleTableUsage(f, cursor, opt->arg); - opt++; - } - - return cursor; -} - -static int showShortOptions(const struct poptOption * opt, FILE * f, - char * str) { - char s[300]; /* this is larger then the ascii set, so - it should do just fine */ - - if (!str) { - str = s; - memset(str, 0, sizeof(str)); - } - - while (opt->longName || opt->shortName || opt->arg) { - if (opt->shortName && !opt->argInfo) - str[strlen(str)] = opt->shortName; - else if (opt->argInfo == POPT_ARG_INCLUDE_TABLE) - showShortOptions(opt->arg, f, str); - - opt++; - } - - if (s != str || !*s) - return 0; - - fprintf(f, " [-%s]", s); - return strlen(s) + 4; -} - -void poptPrintUsage(poptContext con, FILE * f, int flags) { - int cursor; - - cursor = showHelpIntro(con, f); - cursor += showShortOptions(con->options, f, NULL); - singleTableUsage(f, cursor, con->options); - - if (con->otherHelp) { - cursor += strlen(con->otherHelp) + 1; - if (cursor > 79) fprintf(f, "\n "); - fprintf(f, " %s", con->otherHelp); - } - - fprintf(f, "\n"); -} - -void poptSetOtherOptionHelp(poptContext con, const char * text) { - if (con->otherHelp) free(con->otherHelp); - con->otherHelp = strdup(text); -} |