X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=thirdparty%2Fless%2Fopttbl.c;fp=thirdparty%2Fless%2Fopttbl.c;h=63f6889955bd09f47536435f971ad23994a6c8d2;hb=70c3470408854526136adcf3705d1dc7e7189c0a;hp=0000000000000000000000000000000000000000;hpb=d3846c6fda2eb17ccd0402551be8b569ab2dbc5a;p=apitrace diff --git a/thirdparty/less/opttbl.c b/thirdparty/less/opttbl.c new file mode 100644 index 0000000..63f6889 --- /dev/null +++ b/thirdparty/less/opttbl.c @@ -0,0 +1,599 @@ +/* + * Copyright (C) 1984-2011 Mark Nudelman + * + * You may distribute under the terms of either the GNU General Public + * License or the Less License, as specified in the README file. + * + * For more information about less, or for information on how to + * contact the author, see the README file. + */ + + +/* + * The option table. + */ + +#include "less.h" +#include "option.h" + +/* + * Variables controlled by command line options. + */ +public int quiet; /* Should we suppress the audible bell? */ +public int how_search; /* Where should forward searches start? */ +public int top_scroll; /* Repaint screen from top? + (alternative is scroll from bottom) */ +public int pr_type; /* Type of prompt (short, medium, long) */ +public int bs_mode; /* How to process backspaces */ +public int know_dumb; /* Don't complain about dumb terminals */ +public int quit_at_eof; /* Quit after hitting end of file twice */ +public int quit_if_one_screen; /* Quit if EOF on first screen */ +public int squeeze; /* Squeeze multiple blank lines into one */ +public int tabstop; /* Tab settings */ +public int back_scroll; /* Repaint screen on backwards movement */ +public int forw_scroll; /* Repaint screen on forward movement */ +public int caseless; /* Do "caseless" searches */ +public int linenums; /* Use line numbers */ +public int autobuf; /* Automatically allocate buffers as needed */ +public int bufspace; /* Max buffer space per file (K) */ +public int ctldisp; /* Send control chars to screen untranslated */ +public int force_open; /* Open the file even if not regular file */ +public int swindow; /* Size of scrolling window */ +public int jump_sline; /* Screen line of "jump target" */ +public long jump_sline_fraction = -1; +public long shift_count_fraction = -1; +public int chopline; /* Truncate displayed lines at screen width */ +public int no_init; /* Disable sending ti/te termcap strings */ +public int no_keypad; /* Disable sending ks/ke termcap strings */ +public int twiddle; /* Show tildes after EOF */ +public int show_attn; /* Hilite first unread line */ +public int shift_count; /* Number of positions to shift horizontally */ +public int status_col; /* Display a status column */ +public int use_lessopen; /* Use the LESSOPEN filter */ +public int quit_on_intr; /* Quit on interrupt */ +public int follow_mode; /* F cmd Follows file desc or file name? */ +public int oldbot; /* Old bottom of screen behavior {{REMOVE}} */ +#if HILITE_SEARCH +public int hilite_search; /* Highlight matched search patterns? */ +#endif + +public int less_is_more = 0; /* Make compatible with POSIX more */ + +/* + * Long option names. + */ +static struct optname a_optname = { "search-skip-screen", NULL }; +static struct optname b_optname = { "buffers", NULL }; +static struct optname B__optname = { "auto-buffers", NULL }; +static struct optname c_optname = { "clear-screen", NULL }; +static struct optname d_optname = { "dumb", NULL }; +#if MSDOS_COMPILER +static struct optname D__optname = { "color", NULL }; +#endif +static struct optname e_optname = { "quit-at-eof", NULL }; +static struct optname f_optname = { "force", NULL }; +static struct optname F__optname = { "quit-if-one-screen", NULL }; +#if HILITE_SEARCH +static struct optname g_optname = { "hilite-search", NULL }; +#endif +static struct optname h_optname = { "max-back-scroll", NULL }; +static struct optname i_optname = { "ignore-case", NULL }; +static struct optname j_optname = { "jump-target", NULL }; +static struct optname J__optname = { "status-column", NULL }; +#if USERFILE +static struct optname k_optname = { "lesskey-file", NULL }; +#endif +static struct optname K__optname = { "quit-on-intr", NULL }; +static struct optname L__optname = { "no-lessopen", NULL }; +static struct optname m_optname = { "long-prompt", NULL }; +static struct optname n_optname = { "line-numbers", NULL }; +#if LOGFILE +static struct optname o_optname = { "log-file", NULL }; +static struct optname O__optname = { "LOG-FILE", NULL }; +#endif +static struct optname p_optname = { "pattern", NULL }; +static struct optname P__optname = { "prompt", NULL }; +static struct optname q2_optname = { "silent", NULL }; +static struct optname q_optname = { "quiet", &q2_optname }; +static struct optname r_optname = { "raw-control-chars", NULL }; +static struct optname s_optname = { "squeeze-blank-lines", NULL }; +static struct optname S__optname = { "chop-long-lines", NULL }; +#if TAGS +static struct optname t_optname = { "tag", NULL }; +static struct optname T__optname = { "tag-file", NULL }; +#endif +static struct optname u_optname = { "underline-special", NULL }; +static struct optname V__optname = { "version", NULL }; +static struct optname w_optname = { "hilite-unread", NULL }; +static struct optname x_optname = { "tabs", NULL }; +static struct optname X__optname = { "no-init", NULL }; +static struct optname y_optname = { "max-forw-scroll", NULL }; +static struct optname z_optname = { "window", NULL }; +static struct optname quote_optname = { "quotes", NULL }; +static struct optname tilde_optname = { "tilde", NULL }; +static struct optname query_optname = { "help", NULL }; +static struct optname pound_optname = { "shift", NULL }; +static struct optname keypad_optname = { "no-keypad", NULL }; +static struct optname oldbot_optname = { "old-bot", NULL }; +static struct optname follow_optname = { "follow-name", NULL }; + + +/* + * Table of all options and their semantics. + * + * For BOOL and TRIPLE options, odesc[0], odesc[1], odesc[2] are + * the description of the option when set to 0, 1 or 2, respectively. + * For NUMBER options, odesc[0] is the prompt to use when entering + * a new value, and odesc[1] is the description, which should contain + * one %d which is replaced by the value of the number. + * For STRING options, odesc[0] is the prompt to use when entering + * a new value, and odesc[1], if not NULL, is the set of characters + * that are valid in the string. + */ +static struct loption option[] = +{ + { 'a', &a_optname, + TRIPLE, OPT_ONPLUS, &how_search, NULL, + { + "Search includes displayed screen", + "Search skips displayed screen", + "Search includes all of displayed screen" + } + }, + + { 'b', &b_optname, + NUMBER|INIT_HANDLER, 64, &bufspace, opt_b, + { + "Max buffer space per file (K): ", + "Max buffer space per file: %dK", + NULL + } + }, + { 'B', &B__optname, + BOOL, OPT_ON, &autobuf, NULL, + { + "Don't automatically allocate buffers", + "Automatically allocate buffers when needed", + NULL + } + }, + { 'c', &c_optname, + TRIPLE, OPT_OFF, &top_scroll, NULL, + { + "Repaint by scrolling from bottom of screen", + "Repaint by painting from top of screen", + "Repaint by painting from top of screen" + } + }, + { 'd', &d_optname, + BOOL|NO_TOGGLE, OPT_OFF, &know_dumb, NULL, + { + "Assume intelligent terminal", + "Assume dumb terminal", + NULL + } + }, +#if MSDOS_COMPILER + { 'D', &D__optname, + STRING|REPAINT|NO_QUERY, 0, NULL, opt_D, + { + "color desc: ", + "Ddknsu0123456789.", + NULL + } + }, +#endif + { 'e', &e_optname, + TRIPLE, OPT_OFF, &quit_at_eof, NULL, + { + "Don't quit at end-of-file", + "Quit at end-of-file", + "Quit immediately at end-of-file" + } + }, + { 'f', &f_optname, + BOOL, OPT_OFF, &force_open, NULL, + { + "Open only regular files", + "Open even non-regular files", + NULL + } + }, + { 'F', &F__optname, + BOOL, OPT_OFF, &quit_if_one_screen, NULL, + { + "Don't quit if end-of-file on first screen", + "Quit if end-of-file on first screen", + NULL + } + }, +#if HILITE_SEARCH + { 'g', &g_optname, + TRIPLE|HL_REPAINT, OPT_ONPLUS, &hilite_search, NULL, + { + "Don't highlight search matches", + "Highlight matches for previous search only", + "Highlight all matches for previous search pattern", + } + }, +#endif + { 'h', &h_optname, + NUMBER, -1, &back_scroll, NULL, + { + "Backwards scroll limit: ", + "Backwards scroll limit is %d lines", + NULL + } + }, + { 'i', &i_optname, + TRIPLE|HL_REPAINT, OPT_OFF, &caseless, opt_i, + { + "Case is significant in searches", + "Ignore case in searches", + "Ignore case in searches and in patterns" + } + }, + { 'j', &j_optname, + STRING, 0, NULL, opt_j, + { + "Target line: ", + "0123456789.-", + NULL + } + }, + { 'J', &J__optname, + BOOL|REPAINT, OPT_OFF, &status_col, NULL, + { + "Don't display a status column", + "Display a status column", + NULL + } + }, +#if USERFILE + { 'k', &k_optname, + STRING|NO_TOGGLE|NO_QUERY, 0, NULL, opt_k, + { NULL, NULL, NULL } + }, +#endif + { 'K', &K__optname, + BOOL, OPT_OFF, &quit_on_intr, NULL, + { + "Interrupt (ctrl-C) returns to prompt", + "Interrupt (ctrl-C) exits less", + NULL + } + }, + { 'L', &L__optname, + BOOL, OPT_ON, &use_lessopen, NULL, + { + "Don't use the LESSOPEN filter", + "Use the LESSOPEN filter", + NULL + } + }, + { 'm', &m_optname, + TRIPLE, OPT_OFF, &pr_type, NULL, + { + "Short prompt", + "Medium prompt", + "Long prompt" + } + }, + { 'n', &n_optname, + TRIPLE|REPAINT, OPT_ON, &linenums, NULL, + { + "Don't use line numbers", + "Use line numbers", + "Constantly display line numbers" + } + }, +#if LOGFILE + { 'o', &o_optname, + STRING, 0, NULL, opt_o, + { "log file: ", NULL, NULL } + }, + { 'O', &O__optname, + STRING, 0, NULL, opt__O, + { "Log file: ", NULL, NULL } + }, +#endif + { 'p', &p_optname, + STRING|NO_TOGGLE|NO_QUERY, 0, NULL, opt_p, + { NULL, NULL, NULL } + }, + { 'P', &P__optname, + STRING, 0, NULL, opt__P, + { "prompt: ", NULL, NULL } + }, + { 'q', &q_optname, + TRIPLE, OPT_OFF, &quiet, NULL, + { + "Ring the bell for errors AND at eof/bof", + "Ring the bell for errors but not at eof/bof", + "Never ring the bell" + } + }, + { 'r', &r_optname, + TRIPLE|REPAINT, OPT_OFF, &ctldisp, NULL, + { + "Display control characters as ^X", + "Display control characters directly", + "Display control characters directly, processing ANSI sequences" + } + }, + { 's', &s_optname, + BOOL|REPAINT, OPT_OFF, &squeeze, NULL, + { + "Display all blank lines", + "Squeeze multiple blank lines", + NULL + } + }, + { 'S', &S__optname, + BOOL|REPAINT, OPT_OFF, &chopline, NULL, + { + "Fold long lines", + "Chop long lines", + NULL + } + }, +#if TAGS + { 't', &t_optname, + STRING|NO_QUERY, 0, NULL, opt_t, + { "tag: ", NULL, NULL } + }, + { 'T', &T__optname, + STRING, 0, NULL, opt__T, + { "tags file: ", NULL, NULL } + }, +#endif + { 'u', &u_optname, + TRIPLE|REPAINT, OPT_OFF, &bs_mode, NULL, + { + "Display underlined text in underline mode", + "Backspaces cause overstrike", + "Print backspace as ^H" + } + }, + { 'V', &V__optname, + NOVAR, 0, NULL, opt__V, + { NULL, NULL, NULL } + }, + { 'w', &w_optname, + TRIPLE|REPAINT, OPT_OFF, &show_attn, NULL, + { + "Don't highlight first unread line", + "Highlight first unread line after forward-screen", + "Highlight first unread line after any forward movement", + } + }, + { 'x', &x_optname, + STRING|REPAINT, 0, NULL, opt_x, + { + "Tab stops: ", + "0123456789,", + NULL + } + }, + { 'X', &X__optname, + BOOL|NO_TOGGLE, OPT_OFF, &no_init, NULL, + { + "Send init/deinit strings to terminal", + "Don't use init/deinit strings", + NULL + } + }, + { 'y', &y_optname, + NUMBER, -1, &forw_scroll, NULL, + { + "Forward scroll limit: ", + "Forward scroll limit is %d lines", + NULL + } + }, + { 'z', &z_optname, + NUMBER, -1, &swindow, NULL, + { + "Scroll window size: ", + "Scroll window size is %d lines", + NULL + } + }, + { '"', "e_optname, + STRING, 0, NULL, opt_quote, + { "quotes: ", NULL, NULL } + }, + { '~', &tilde_optname, + BOOL|REPAINT, OPT_ON, &twiddle, NULL, + { + "Don't show tildes after end of file", + "Show tildes after end of file", + NULL + } + }, + { '?', &query_optname, + NOVAR, 0, NULL, opt_query, + { NULL, NULL, NULL } + }, + { '#', £_optname, + STRING, 0, NULL, opt_shift, + { + "Horizontal shift: ", + "0123456789.", + NULL + } + }, + { OLETTER_NONE, &keypad_optname, + BOOL|NO_TOGGLE, OPT_OFF, &no_keypad, NULL, + { + "Use keypad mode", + "Don't use keypad mode", + NULL + } + }, + { OLETTER_NONE, &oldbot_optname, + BOOL, OPT_OFF, &oldbot, NULL, + { + "Use new bottom of screen behavior", + "Use old bottom of screen behavior", + NULL + } + }, + { OLETTER_NONE, &follow_optname, + BOOL, FOLLOW_DESC, &follow_mode, NULL, + { + "F command follows file descriptor", + "F command follows file name", + NULL + } + }, + { '\0', NULL, NOVAR, 0, NULL, NULL, { NULL, NULL, NULL } } +}; + + +/* + * Initialize each option to its default value. + */ + public void +init_option() +{ + register struct loption *o; + char *p; + + p = lgetenv("LESS_IS_MORE"); + if (p != NULL && *p != '\0') + less_is_more = 1; + + for (o = option; o->oletter != '\0'; o++) + { + /* + * Set each variable to its default. + */ + if (o->ovar != NULL) + *(o->ovar) = o->odefault; + if (o->otype & INIT_HANDLER) + (*(o->ofunc))(INIT, (char *) NULL); + } +} + +/* + * Find an option in the option table, given its option letter. + */ + public struct loption * +findopt(c) + int c; +{ + register struct loption *o; + + for (o = option; o->oletter != '\0'; o++) + { + if (o->oletter == c) + return (o); + if ((o->otype & TRIPLE) && ASCII_TO_UPPER(o->oletter) == c) + return (o); + } + return (NULL); +} + +/* + * + */ + static int +is_optchar(c) + char c; +{ + if (ASCII_IS_UPPER(c)) + return 1; + if (ASCII_IS_LOWER(c)) + return 1; + if (c == '-') + return 1; + return 0; +} + +/* + * Find an option in the option table, given its option name. + * p_optname is the (possibly partial) name to look for, and + * is updated to point after the matched name. + * p_oname if non-NULL is set to point to the full option name. + */ + public struct loption * +findopt_name(p_optname, p_oname, p_err) + char **p_optname; + char **p_oname; + int *p_err; +{ + char *optname = *p_optname; + register struct loption *o; + register struct optname *oname; + register int len; + int uppercase; + struct loption *maxo = NULL; + struct optname *maxoname = NULL; + int maxlen = 0; + int ambig = 0; + int exact = 0; + + /* + * Check all options. + */ + for (o = option; o->oletter != '\0'; o++) + { + /* + * Check all names for this option. + */ + for (oname = o->onames; oname != NULL; oname = oname->onext) + { + /* + * Try normal match first (uppercase == 0), + * then, then if it's a TRIPLE option, + * try uppercase match (uppercase == 1). + */ + for (uppercase = 0; uppercase <= 1; uppercase++) + { + len = sprefix(optname, oname->oname, uppercase); + if (len <= 0 || is_optchar(optname[len])) + { + /* + * We didn't use all of the option name. + */ + continue; + } + if (!exact && len == maxlen) + /* + * Already had a partial match, + * and now there's another one that + * matches the same length. + */ + ambig = 1; + else if (len > maxlen) + { + /* + * Found a better match than + * the one we had. + */ + maxo = o; + maxoname = oname; + maxlen = len; + ambig = 0; + exact = (len == (int)strlen(oname->oname)); + } + if (!(o->otype & TRIPLE)) + break; + } + } + } + if (ambig) + { + /* + * Name matched more than one option. + */ + if (p_err != NULL) + *p_err = OPT_AMBIG; + return (NULL); + } + *p_optname = optname + maxlen; + if (p_oname != NULL) + *p_oname = maxoname == NULL ? NULL : maxoname->oname; + return (maxo); +}