X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=progs%2Ftabs.c;h=e638a2c5b9768837237894d30d513f713c2d617a;hp=e0e042b3e5223adf0775738926a71cbe5e5779fb;hb=808858ace09b9bf60f7154e33cb6572f49347101;hpb=3f20704179ae1f625bd7bc75829929ccf46b25c3 diff --git a/progs/tabs.c b/progs/tabs.c index e0e042b3..e638a2c5 100644 --- a/progs/tabs.c +++ b/progs/tabs.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 2008-2010,2011 Free Software Foundation, Inc. * + * Copyright (c) 2008-2013,2015 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * @@ -37,12 +37,20 @@ #define USE_LIBTINFO #include -MODULE_ID("$Id: tabs.c,v 1.20 2011/05/14 22:34:36 tom Exp $") +MODULE_ID("$Id: tabs.c,v 1.35 2015/04/04 14:57:47 tom Exp $") static void usage(void) GCC_NORETURN; +static char *prg_name; static int max_cols; +static void +failed(const char *s) +{ + perror(s); + ExitProgram(EXIT_FAILURE); +} + static int putch(int c) { @@ -83,28 +91,29 @@ decode_tabs(const char *tab_list) int prior = 0; int ch; - if (result != 0) { - while ((ch = *tab_list++) != '\0') { - if (isdigit(UChar(ch))) { - value *= 10; - value += (ch - '0'); - } else if (ch == ',') { - result[n] = value + prior; - if (n > 0 && result[n] <= result[n - 1]) { - fprintf(stderr, - "tab-stops are not in increasing order: %d %d\n", - value, result[n - 1]); - free(result); - result = 0; - break; - } - ++n; - value = 0; - prior = 0; - } else if (ch == '+') { - if (n) - prior = result[n - 1]; + if (result == 0) + failed("decode_tabs"); + + while ((ch = *tab_list++) != '\0') { + if (isdigit(UChar(ch))) { + value *= 10; + value += (ch - '0'); + } else if (ch == ',') { + result[n] = value + prior; + if (n > 0 && result[n] <= result[n - 1]) { + fprintf(stderr, + "%s: tab-stops are not in increasing order: %d %d\n", + prg_name, value, result[n - 1]); + free(result); + result = 0; + break; } + ++n; + value = 0; + prior = 0; + } else if (ch == '+') { + if (n) + prior = result[n - 1]; } } @@ -114,6 +123,7 @@ decode_tabs(const char *tab_list) */ if ((n == 0) && (value > 0)) { int step = value; + value = 1; while (n < max_cols - 1) { result[n++] = value; value += step; @@ -126,6 +136,7 @@ decode_tabs(const char *tab_list) result[n++] = value + prior; result[n] = 0; } + return result; } @@ -140,10 +151,11 @@ print_ruler(int *tab_list) for (n = 0; n < max_cols; n += 10) { int ch = 1 + (n / 10); char buffer[20]; - sprintf(buffer, "----+----%c", - ((ch < 10) - ? (ch + '0') - : (ch + 'A' - 10))); + _nc_SPRINTF(buffer, _nc_SLIMIT(sizeof(buffer)) + "----+----%c", + ((ch < 10) + ? (ch + '0') + : (ch + 'A' - 10))); printf("%.*s", ((max_cols - n) > 10) ? 10 : (max_cols - n), buffer); } putchar('\n'); @@ -263,15 +275,16 @@ add_to_tab_list(char **append, const char *value) need += strlen(*append); result = malloc(need); - if (result != 0) { - *result = '\0'; - if (*append != 0) { - strcpy(result, *append); - free(*append); - } - strcat(result, comma); - strcat(result, copied); + if (result == 0) + failed("add_to_tab_list"); + + *result = '\0'; + if (*append != 0) { + _nc_STRCPY(result, *append, need); + free(*append); } + _nc_STRCAT(result, comma, need); + _nc_STRCAT(result, copied, need); *append = result; } @@ -282,7 +295,7 @@ add_to_tab_list(char **append, const char *value) * Check for illegal characters in the tab-list. */ static bool -legal_tab_list(const char *program, const char *tab_list) +legal_tab_list(const char *tab_list) { bool result = TRUE; @@ -294,54 +307,66 @@ legal_tab_list(const char *program, const char *tab_list) if (!(isdigit(ch) || ch == ',' || ch == '+')) { fprintf(stderr, "%s: unexpected character found '%c'\n", - program, ch); + prg_name, ch); result = FALSE; break; } } } else { - fprintf(stderr, "%s: trailing comma found '%s'\n", program, tab_list); + fprintf(stderr, "%s: trailing comma found '%s'\n", prg_name, tab_list); result = FALSE; } } else { - fprintf(stderr, "%s: no tab-list given\n", program); + fprintf(stderr, "%s: no tab-list given\n", prg_name); result = FALSE; } return result; } +static char * +skip_list(char *value) +{ + while (*value != '\0' && + (isdigit(UChar(*value)) || + isspace(UChar(*value)) || + strchr("+,", UChar(*value)) != 0)) { + ++value; + } + return value; +} + static void usage(void) { - static const char *msg[] = +#define DATA(s) s "\n" + static const char msg[] = { - "Usage: tabs [options] [tabstop-list]" - ,"" - ,"Options:" - ," -0 reset tabs" - ," -8 set tabs to standard interval" - ," -a Assembler, IBM S/370, first format" - ," -a2 Assembler, IBM S/370, second format" - ," -c COBOL, normal format" - ," -c2 COBOL compact format" - ," -c3 COBOL compact format extended" - ," -d debug (show ruler with expected/actual tab positions)" - ," -f FORTRAN" - ," -n no-op (do not modify terminal settings)" - ," -p PL/I" - ," -s SNOBOL" - ," -u UNIVAC 1100 Assembler" - ," -T name use terminal type 'name'" - ,"" - ,"A tabstop-list is an ordered list of column numbers, e.g., 1,11,21" - ,"or 1,+10,+10 which is the same." + DATA("Usage: tabs [options] [tabstop-list]") + DATA("") + DATA("Options:") + DATA(" -0 reset tabs") + DATA(" -8 set tabs to standard interval") + DATA(" -a Assembler, IBM S/370, first format") + DATA(" -a2 Assembler, IBM S/370, second format") + DATA(" -c COBOL, normal format") + DATA(" -c2 COBOL compact format") + DATA(" -c3 COBOL compact format extended") + DATA(" -d debug (show ruler with expected/actual tab positions)") + DATA(" -f FORTRAN") + DATA(" -n no-op (do not modify terminal settings)") + DATA(" -p PL/I") + DATA(" -s SNOBOL") + DATA(" -u UNIVAC 1100 Assembler") + DATA(" -T name use terminal type 'name'") + DATA(" -V print version") + DATA("") + DATA("A tabstop-list is an ordered list of column numbers, e.g., 1,11,21") + DATA("or 1,+10,+10 which is the same.") }; - unsigned n; +#undef DATA fflush(stdout); - for (n = 0; n < SIZEOF(msg); ++n) { - fprintf(stderr, "%s\n", msg[n]); - } + fputs(msg, stderr); ExitProgram(EXIT_FAILURE); } @@ -353,10 +378,11 @@ main(int argc, char *argv[]) bool no_op = FALSE; int n, ch; NCURSES_CONST char *term_name = 0; - const char *mar_list = 0; /* ignored */ char *append = 0; const char *tab_list = 0; + prg_name = _nc_rootname(argv[0]); + if ((term_name = getenv("TERM")) == 0) term_name = "ansi+tabs"; @@ -368,23 +394,25 @@ main(int argc, char *argv[]) while ((ch = *++option) != '\0') { switch (ch) { case 'a': - switch (*option) { + switch (*++option) { + default: case '\0': tab_list = "1,10,16,36,72"; + option--; /* Assembler, IBM S/370, first format */ break; case '2': tab_list = "1,10,16,40,72"; /* Assembler, IBM S/370, second format */ break; - default: - usage(); } break; case 'c': - switch (*option) { + switch (*++option) { + default: case '\0': tab_list = "1,8,12,16,20,55"; + option--; /* COBOL, normal format */ break; case '2': @@ -395,8 +423,6 @@ main(int argc, char *argv[]) tab_list = "1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67"; /* COBOL compact format extended */ break; - default: - usage(); } break; case 'd': /* ncurses extension */ @@ -427,17 +453,22 @@ main(int argc, char *argv[]) term_name = option; } else { term_name = argv[n++]; + option--; } option += ((int) strlen(option)) - 1; continue; + case 'V': + puts(curses_version()); + ExitProgram(EXIT_SUCCESS); default: if (isdigit(UChar(*option))) { - tab_list = option; - ++n; + char *copy = strdup(option); + *skip_list(copy) = '\0'; + tab_list = copy; + option = skip_list(option) - 1; } else { usage(); } - option += ((int) strlen(option)) - 1; break; } } @@ -446,7 +477,11 @@ main(int argc, char *argv[]) while ((ch = *++option) != '\0') { switch (ch) { case 'm': - mar_list = option; + /* + * The "+mXXX" option is unimplemented because only the long-obsolete + * att510d implements smgl, which is needed to support + * this option. + */ break; default: /* special case of relative stops separated by spaces? */ @@ -477,12 +512,12 @@ main(int argc, char *argv[]) if (!VALID_STRING(clear_all_tabs)) { fprintf(stderr, "%s: terminal type '%s' cannot reset tabs\n", - argv[0], term_name); + prg_name, term_name); } else if (!VALID_STRING(set_tab)) { fprintf(stderr, "%s: terminal type '%s' cannot set tabs\n", - argv[0], term_name); - } else if (legal_tab_list(argv[0], tab_list)) { + prg_name, term_name); + } else if (legal_tab_list(tab_list)) { int *list = decode_tabs(tab_list); if (!no_op)