-#include <unistd.h>
-#include <stdlib.h>
+/*
+ * I/O and support routines.
+ *
+ * SPDX-FileCopyrightText: (C) 1977, 2005 by Will Crowther and Don Woods
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <ctype.h>
+#include <editline/readline.h>
+#include <inttypes.h>
+#include <stdarg.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
-#include <ctype.h>
+#include <unistd.h>
#include "advent.h"
-#include "database.h"
-#include "linenoise/linenoise.h"
-#include "newdb.h"
-
-char* xstrdup(const char* s)
-{
- char* ptr = strdup(s);
- if (ptr == NULL)
- {
- fprintf(stderr, "Out of memory!\n");
- exit(EXIT_FAILURE);
- }
- return(ptr);
-}
-
-void packed_to_token(long packed, char token[6])
-{
- // Unpack and map back to ASCII.
- for (int i = 0; i < 5; ++i)
- {
- char advent = (packed >> i * 6) & 63;
- token[4 - i] = advent_to_ascii[advent];
- }
-
- // Ensure the last character is \0.
- token[5] = '\0';
-
- // Replace trailing whitespace with \0.
- for (int i = 4; i >= 0; --i)
- {
- if (token[i] == ' ' || token[i] == '\t')
- token[i] = '\0';
- else
- break;
- }
-}
-
-/* I/O routines (SPEAK, PSPEAK, RSPEAK, SETPRM, GETIN, YES) */
-
-void newspeak(char* msg)
-{
- // Do nothing if we got a null pointer.
- if (msg == NULL)
- return;
-
- // Do nothing if we got an empty string.
- if (strlen(msg) == 0)
- return;
-
- // Print a newline if the global game.blklin says to.
- if (game.blklin == true)
- printf("\n");
-
- // Create a copy of our string, so we can edit it.
- char* copy = xstrdup(msg);
-
- // Staging area for stringified parameters.
- char parameters[5][100]; // FIXME: to be replaced with dynamic allocation
-
- // Handle format specifiers (including the custom %C, %L, %S) by adjusting the parameter accordingly, and replacing the specifier with %s.
- int pi = 0; // parameter index
- for (int i = 0; i < strlen(msg); ++i)
- {
- if (msg[i] == '%')
- {
- ++pi;
-
- // Integer specifier. In order to accommodate the fact that PARMS can have both legitimate integers *and* packed tokens, stringify everything. Future work may eliminate the need for this.
- if (msg[i + 1] == 'd')
- {
- copy[i + 1] = 's';
- sprintf(parameters[pi], "%ld", PARMS[pi]);
- }
-
- // Unmodified string specifier.
- if (msg[i + 1] == 's')
- {
- packed_to_token(PARMS[pi], parameters[pi]);
- }
-
- // Singular/plural specifier.
- if (msg[i + 1] == 'S')
- {
- copy[i + 1] = 's';
- if (PARMS[pi - 1] > 1) // look at the *previous* parameter (which by necessity must be numeric)
- {
- sprintf(parameters[pi], "%s", "s");
+#include "dungeon.h"
+
+static void *xcalloc(size_t size) {
+ void *ptr = calloc(size, 1);
+ if (ptr == NULL) {
+ // LCOV_EXCL_START
+ // exclude from coverage analysis because we can't simulate an
+ // out of memory error in testing
+ fprintf(stderr, "Out of memory!\n");
+ exit(EXIT_FAILURE);
+ // LCOV_EXCL_STOP
+ }
+ return (ptr);
+}
+
+/* I/O routines (speak, pspeak, rspeak, sspeak, get_input, yes) */
+
+static void vspeak(const char *msg, bool blank, va_list ap) {
+ /* Engine for various speak functions */
+ // Do nothing if we got a null pointer.
+ if (msg == NULL) {
+ return;
+ }
+
+ // Do nothing if we got an empty string.
+ if (strlen(msg) == 0) {
+ return;
+ }
+
+ if (blank == true) {
+ printf("\n");
+ }
+
+ int msglen = strlen(msg);
+
+ // Rendered string
+ ssize_t size = 2000; /* msglen > 50 ? msglen*2 : 100; */
+ char *rendered = xcalloc(size);
+ char *renderp = rendered;
+
+ // Handle format specifiers (including the custom %S) by
+ // adjusting the parameter accordingly, and replacing the
+ // specifier with %s.
+ bool pluralize = false;
+ for (int i = 0; i < msglen; i++) {
+ if (msg[i] != '%') {
+ /* Ugh. Least obtrusive way to deal with artifacts "on
+ * the floor" being dropped outside of both cave and
+ * building. */
+ if (strncmp(msg + i, "floor", 5) == 0 &&
+ strchr(" .", msg[i + 5]) && !INSIDE(game.loc)) {
+ strcpy(renderp, "ground");
+ renderp += 6;
+ i += 4;
+ size -= 5;
+ } else {
+ *renderp++ = msg[i];
+ size--;
+ }
+ } else {
+ i++;
+ // Integer specifier.
+ if (msg[i] == 'd') {
+ int32_t arg = va_arg(ap, int32_t);
+ int ret =
+ snprintf(renderp, size, "%" PRId32, arg);
+ if (ret < size) {
+ renderp += ret;
+ size -= ret;
+ }
+ pluralize = (arg != 1);
+ }
+
+ // Unmodified string specifier.
+ if (msg[i] == 's') {
+ char *arg = va_arg(ap, char *);
+ strncat(renderp, arg, size - 1);
+ size_t len = strlen(renderp);
+ renderp += len;
+ size -= len;
+ }
+
+ // Singular/plural specifier.
+ if (msg[i] == 'S') {
+ // look at the *previous* numeric parameter
+ if (pluralize) {
+ *renderp++ = 's';
+ size--;
+ }
+ }
+
+ // LCOV_EXCL_START - doesn't occur in test suite.
+ /* Version specifier */
+ if (msg[i] == 'V') {
+ strcpy(renderp, VERSION);
+ size_t len = strlen(VERSION);
+ renderp += len;
+ size -= len;
+ }
+ // LCOV_EXCL_STOP
}
- else
- {
- sprintf(parameters[pi], "%s", "");
+ }
+ *renderp = 0;
+
+ // Print the message.
+ printf("%s\n", rendered);
+
+ free(rendered);
+}
+
+void speak(const char *msg, ...) {
+ /* speak a specified string */
+ va_list ap;
+ va_start(ap, msg);
+ vspeak(msg, true, ap);
+ va_end(ap);
+}
+
+void sspeak(const int msg, ...) {
+ /* Speak a message from the arbitrary-messages list */
+ va_list ap;
+ va_start(ap, msg);
+ fputc('\n', stdout);
+ vprintf(arbitrary_messages[msg], ap);
+ fputc('\n', stdout);
+ va_end(ap);
+}
+
+void pspeak(vocab_t msg, enum speaktype mode, bool blank, int skip, ...) {
+ /* Find the skip+1st message from msg and print it. Modes are:
+ * feel = for inventory, what you can touch
+ * look = the full description for the state the object is in
+ * listen = the sound for the state the object is in
+ * study = text on the object. */
+ va_list ap;
+ va_start(ap, skip);
+ switch (mode) {
+ case touch:
+ vspeak(objects[msg].inventory, blank, ap);
+ break;
+ case look:
+ vspeak(objects[msg].descriptions[skip], blank, ap);
+ break;
+ case hear:
+ vspeak(objects[msg].sounds[skip], blank, ap);
+ break;
+ case study:
+ vspeak(objects[msg].texts[skip], blank, ap);
+ break;
+ case change:
+ vspeak(objects[msg].changes[skip], blank, ap);
+ break;
+ }
+ va_end(ap);
+}
+
+void rspeak(vocab_t i, ...) {
+ /* Print the i-th "random" message (section 6 of database). */
+ va_list ap;
+ va_start(ap, i);
+ vspeak(arbitrary_messages[i], true, ap);
+ va_end(ap);
+}
+
+void echo_input(FILE *destination, const char *input_prompt,
+ const char *input) {
+ size_t len = strlen(input_prompt) + strlen(input) + 1;
+ char *prompt_and_input = (char *)xcalloc(len);
+ strcpy(prompt_and_input, input_prompt);
+ strcat(prompt_and_input, input);
+ fprintf(destination, "%s\n", prompt_and_input);
+ free(prompt_and_input);
+}
+
+static int word_count(char *str) {
+ char delims[] = " \t";
+ int count = 0;
+ int inblanks = true;
+
+ for (char *s = str; *s; s++) {
+ if (inblanks) {
+ if (strchr(delims, *s) == 0) {
+ ++count;
+ inblanks = false;
+ }
+ } else {
+ if (strchr(delims, *s) != 0) {
+ inblanks = true;
+ }
}
- }
-
- // All-lowercase specifier.
- if (msg[i + 1] == 'L')
- {
- copy[i + 1] = 's';
- packed_to_token(PARMS[pi], parameters[pi]);
- for (int i = 0; i < strlen(parameters[pi]); ++i)
- {
- parameters[pi][i] = tolower(parameters[pi][i]);
+ }
+
+ return (count);
+}
+
+static char *get_input(void) {
+ // Set up the prompt
+ char input_prompt[] = PROMPT;
+ if (!settings.prompt) {
+ input_prompt[0] = '\0';
+ }
+
+ // Print a blank line
+ printf("\n");
+
+ char *input;
+ for (;;) {
+ input = myreadline(input_prompt);
+
+ if (input == NULL) { // Got EOF; return with it.
+ return (input);
}
- }
-
- // First char uppercase, rest lowercase.
- if (msg[i + 1] == 'C')
- {
- copy[i + 1] = 's';
- packed_to_token(PARMS[pi], parameters[pi]);
- for (int i = 0; i < strlen(parameters[pi]); ++i)
- {
- parameters[pi][i] = tolower(parameters[pi][i]);
+ if (input[0] == '#') { // Ignore comments.
+ free(input);
+ continue;
}
- parameters[pi][0] = toupper(parameters[pi][0]);
- }
- }
- }
-
- // Render the final string.
- char rendered[2000]; // FIXME: to be replaced with dynamic allocation
- sprintf(rendered, copy, parameters[1], parameters[2], parameters[3], parameters[4]); // FIXME: to be replaced with vsprintf()
-
- // Print the message.
- printf("%s\n", rendered);
-
- free(copy);
-}
-
-void PSPEAK(vocab_t msg,int skip)
-/* Find the skip+1st message from msg and print it. msg should be
- * the index of the inventory message for object. (INVEN+N+1 message
- * is game.prop=N message). */
-{
- if (skip >= 0)
- newspeak(object_descriptions[msg].longs[skip]);
- else
- newspeak(object_descriptions[msg].inventory);
-}
-
-void RSPEAK(vocab_t i)
-/* Print the i-th "random" message (section 6 of database). */
-{
- newspeak(arbitrary_messages[i]);
-}
-
-void SETPRM(long first, long p1, long p2)
-/* Stores parameters into the PRMCOM parms array for use by speak. P1 and P2
- * are stored into PARMS(first) and PARMS(first+1). */
-{
- if (first >= MAXPARMS)
- BUG(29);
- else {
- PARMS[first] = p1;
- PARMS[first+1] = p2;
- }
-}
-
-bool GETIN(FILE *input,
- long *pword1, long *pword1x,
- long *pword2, long *pword2x)
-/* Get a command from the adventurer. Snarf out the first word, pad it with
- * blanks, and return it in WORD1. Chars 6 thru 10 are returned in WORD1X, in
- * case we need to print out the whole word in an error message. Any number of
- * blanks may follow the word. If a second word appears, it is returned in
- * WORD2 (chars 6 thru 10 in WORD2X), else WORD2 is -1. */
-{
- long junk;
-
- for (;;) {
- if (game.blklin)
- TYPE0();
- if (!MAPLIN(input))
- return false;
- *pword1=GETTXT(true,true,true);
- if (game.blklin && *pword1 < 0)
- continue;
- *pword1x=GETTXT(false,true,true);
- do {
- junk=GETTXT(false,true,true);
- } while
- (junk > 0);
- *pword2=GETTXT(true,true,true);
- *pword2x=GETTXT(false,true,true);
- do {
- junk=GETTXT(false,true,true);
- } while
- (junk > 0);
- if (GETTXT(true,true,true) <= 0)
- return true;
- RSPEAK(53);
- }
-}
-
-long YES(FILE *input, vocab_t x, vocab_t y, vocab_t z)
-/* Print message X, wait for yes/no answer. If yes, print Y and return true;
- * if no, print Z and return false. */
-{
- token_t reply, junk1, junk2, junk3;
-
- for (;;) {
- RSPEAK(x);
- GETIN(input, &reply, &junk1, &junk2, &junk3);
- if (reply == MAKEWD(250519) || reply == MAKEWD(25)) {
- RSPEAK(y);
- return true;
- }
- if (reply == MAKEWD(1415) || reply == MAKEWD(14)) {
- RSPEAK(z);
- return false;
- }
- RSPEAK(185);
- }
-}
-
-/* Line-parsing routines (GETTXT, MAKEWD, PUTTXT, SHFTXT, TYPE0) */
-
-long GETTXT(bool skip, bool onewrd, bool upper)
-/* Take characters from an input line and pack them into 30-bit words.
- * Skip says to skip leading blanks. ONEWRD says stop if we come to a
- * blank. UPPER says to map all letters to uppercase. If we reach the
- * end of the line, the word is filled up with blanks (which encode as 0's).
- * If we're already at end of line when TEXT is called, we return -1. */
-{
- long text;
- static long splitting = -1;
-
- if (LNPOSN != splitting)
- splitting = -1;
- text= -1;
- while (true) {
- if (LNPOSN > LNLENG)
- return(text);
- if ((!skip) || INLINE[LNPOSN] != 0)
- break;
- ++LNPOSN;
- }
-
- text=0;
- for (int I=1; I<=TOKLEN; I++) {
- text=text*64;
- if (LNPOSN > LNLENG || (onewrd && INLINE[LNPOSN] == 0))
- continue;
- char current=INLINE[LNPOSN];
- if (current < ascii_to_advent['%']) {
- splitting = -1;
- if (upper && current >= ascii_to_advent['a'])
- current=current-26;
- text=text+current;
- ++LNPOSN;
- continue;
- }
- if (splitting != LNPOSN) {
- text=text+ascii_to_advent['%'];
- splitting = LNPOSN;
- continue;
- }
-
- text=text+current-ascii_to_advent['%'];
- splitting = -1;
- ++LNPOSN;
- }
-
- return text;
-}
-
-token_t MAKEWD(long letters)
-/* Combine TOKLEN (currently 5) uppercase letters (represented by
- * pairs of decimal digits in lettrs) to form a 30-bit value matching
- * the one that GETTXT would return given those characters plus
- * trailing blanks. Caution: lettrs will overflow 31 bits if
- * 5-letter word starts with V-Z. As a kludgey workaround, you can
- * increment a letter by 5 by adding 50 to the next pair of
- * digits. */
-{
- long i = 1, word = 0;
-
- for (long k=letters; k != 0; k=k/100) {
- word=word+i*(MOD(k,50)+10);
- i=i*64;
- if (MOD(k,100) > 50)word=word+i*5;
- }
- i=64L*64L*64L*64L*64L/i;
- word=word*i;
- return word;
-}
-
-void TYPE0(void)
-/* Type a blank line. This procedure is provided as a convenience for callers
- * who otherwise have no use for MAPCOM. */
-{
- long temp;
-
- temp=LNLENG;
- LNLENG=0;
- TYPE();
- LNLENG=temp;
- return;
-}
-
-/* Data structure routines */
-
-long VOCAB(long id, long init)
-/* Look up ID in the vocabulary (ATAB) and return its "definition" (KTAB), or
- * -1 if not found. If INIT is positive, this is an initialisation call setting
- * up a keyword variable, and not finding it constitutes a bug. It also means
- * that only KTAB values which taken over 1000 equal INIT may be considered.
- * (Thus "STEPS", which is a motion verb as well as an object, may be located
- * as an object.) And it also means the KTAB value is taken modulo 1000. */
-{
- long i, lexeme;
-
- for (i=1; i<=TABSIZ; i++) {
- if (KTAB[i] == -1) {
- lexeme= -1;
- if (init < 0)
- return(lexeme);
- BUG(5);
- }
- if (init >= 0 && KTAB[i]/1000 != init)
- continue;
- if (ATAB[i] == id) {
- lexeme=KTAB[i];
- if (init >= 0)
- lexeme=MOD(lexeme,1000);
- return(lexeme);
- }
- }
- BUG(21);
-}
-
-void DSTROY(long object)
-/* Permanently eliminate "object" by moving to a non-existent location. */
-{
- MOVE(object,0);
-}
-
-void JUGGLE(long object)
-/* Juggle an object by picking it up and putting it down again, the purpose
- * being to get the object to the front of the chain of things at its loc. */
-{
- long i, j;
-
- i=game.place[object];
- j=game.fixed[object];
- MOVE(object,i);
- MOVE(object+NOBJECTS,j);
-}
-
-void MOVE(long object, long where)
-/* Place any object anywhere by picking it up and dropping it. May
- * already be toting, in which case the carry is a no-op. Mustn't
- * pick up objects which are not at any loc, since carry wants to
- * remove objects from game.atloc chains. */
-{
- long from;
-
- if (object > NOBJECTS)
- from=game.fixed[object-NOBJECTS];
- else
- from=game.place[object];
- if (from > 0 && from <= 300)
- CARRY(object,from);
- DROP(object,where);
-}
-
-long PUT(long object, long where, long pval)
-/* PUT is the same as MOVE, except it returns a value used to set up the
- * negated game.prop values for the repository objects. */
-{
- MOVE(object,where);
- return (-1)-pval;;
-}
-
-void CARRY(long object, long where)
-/* Start toting an object, removing it from the list of things at its former
- * location. Incr holdng unless it was already being toted. If object>NOBJECTS
- * (moving "fixed" second loc), don't change game.place or game.holdng. */
-{
- long temp;
-
- if (object <= NOBJECTS) {
- if (game.place[object] == -1)
- return;
- game.place[object]= -1;
- ++game.holdng;
- }
- if (game.atloc[where] == object) {
- game.atloc[where]=game.link[object];
- return;
- }
- temp=game.atloc[where];
- while (game.link[temp] != object) {
- temp=game.link[temp];
- }
- game.link[temp]=game.link[object];
-}
-
-void DROP(long object, long where)
-/* Place an object at a given loc, prefixing it onto the game.atloc list. Decr
- * game.holdng if the object was being toted. */
-{
- if (object > NOBJECTS)
- game.fixed[object-NOBJECTS] = where;
- else
- {
- if (game.place[object] == -1)
- --game.holdng;
- game.place[object] = where;
- }
- if (where <= 0)
- return;
- game.link[object] = game.atloc[where];
- game.atloc[where] = object;
-}
-
-long ATDWRF(long where)
-/* Return the index of first dwarf at the given location, zero if no dwarf is
- * there (or if dwarves not active yet), -1 if all dwarves are dead. Ignore
- * the pirate (6th dwarf). */
-{
- long at, i;
-
- at =0;
- if (game.dflag < 2)
- return(at);
- at = -1;
- for (i=1; i<=NDWARVES-1; i++) {
- if (game.dloc[i] == where)
- return i;
- if (game.dloc[i] != 0)
- at=0;
- }
- return(at);
-}
-
-/* Utility routines (SETBIT, TSTBIT, set_seed, get_next_lcg_value,
- * randrange, RNDVOC, BUG) */
-
-long SETBIT(long bit)
-/* Returns 2**bit for use in constructing bit-masks. */
-{
- return(1 << bit);
-}
-
-bool TSTBIT(long mask, int bit)
-/* Returns true if the specified bit is set in the mask. */
-{
- return (mask & (1 << bit)) != 0;
-}
-
-void set_seed(long seedval)
-/* Set the LCG seed */
-{
- lcgstate.x = (unsigned long) seedval % lcgstate.m;
-}
-
-unsigned long get_next_lcg_value(void)
-/* Return the LCG's current value, and then iterate it. */
-{
- unsigned long old_x = lcgstate.x;
- lcgstate.x = (lcgstate.a * lcgstate.x + lcgstate.c) % lcgstate.m;
- return old_x;
-}
-
-long randrange(long range)
-/* Return a random integer from [0, range). */
-{
- return range * get_next_lcg_value() / lcgstate.m;
-}
-
-long RNDVOC(long second, long force)
-/* Searches the vocabulary ATAB for a word whose second character is
- * char, and changes that word such that each of the other four
- * characters is a random letter. If force is non-zero, it is used
- * as the new word. Returns the new word. */
-{
- long rnd = force;
-
- if (rnd == 0) {
- for (int i = 1; i <= 5; i++) {
- long j = 11 + randrange(26);
- if (i == 2)
- j = second;
- rnd = rnd * 64 + j;
- }
- }
-
- long div = 64L * 64L * 64L;
- for (int i = 1; i <= TABSIZ; i++) {
- if (MOD(ATAB[i]/div, 64L) == second)
- {
- ATAB[i] = rnd;
- break;
- }
- }
-
- return rnd;
-}
-
-void BUG(long num)
-/* The following conditions are currently considered fatal bugs. Numbers < 20
- * are detected while reading the database; the others occur at "run time".
- * 0 Message line > 70 characters
- * 1 Null line in message
- * 2 Too many words of messages
- * 3 Too many travel options
- * 4 Too many vocabulary words
- * 5 Required vocabulary word not found
- * 6 Too many RTEXT messages
- * 7 Too many hints
- * 8 Location has cond bit being set twice
- * 9 Invalid section number in database
- * 10 Too many locations
- * 11 Too many class or turn messages
- * 20 Special travel (500>L>300) exceeds goto list
- * 21 Ran off end of vocabulary table
- * 22 Vocabulary type (N/1000) not between 0 and 3
- * 23 Intransitive action verb exceeds goto list
- * 24 Transitive action verb exceeds goto list
- * 25 Conditional travel entry with no alternative
- * 26 Location has no travel entries
- * 27 Hint number exceeds goto list
- * 28 Invalid month returned by date function
- * 29 Too many parameters given to SETPRM */
-{
-
- printf("Fatal error %ld. See source code for interpretation.\n", num);
- exit(0);
-}
-
-/* Machine dependent routines (MAPLIN, TYPE, SAVEIO) */
-
-bool MAPLIN(FILE *fp)
-{
- long i, val;
- bool eof;
-
- /* Read a line of input, from the specified input source.
- * This logic is complicated partly because it has to serve
- * several cases with different requirements and partly because
- * of a quirk in linenoise().
- *
- * The quirk shows up when you feed the program a test log on stdin.
- * While fgets (as expected) consumes it a line at a time, linenoise()
- * returns the first line and discards the rest. Thus, there needs to
- * be an editline (-s) option to fall back to fgets while still
- * prompting.
- */
- do {
- if (!editline) {
- if (prompt)
- fputs("> ", stdout);
- IGNORE(fgets(rawbuf,sizeof(rawbuf)-1,fp));
- eof = (feof(fp));
- } else {
- char *cp = linenoise("> ");
- eof = (cp == NULL);
- if (!eof) {
- strncpy(rawbuf, cp, sizeof(rawbuf)-1);
- linenoiseHistoryAdd(rawbuf);
- strncat(rawbuf, "\n", sizeof(rawbuf)-1);
- linenoiseFree(cp);
- }
- }
- } while
- (!eof && rawbuf[0] == '#');
- if (eof) {
- if (logfp && fp == stdin)
- fclose(logfp);
- return false;
- } else {
- FILE *efp = NULL;
- if (logfp && fp == stdin)
- efp = logfp;
- else if (!isatty(0))
- efp = stdout;
- if (efp != NULL)
- {
- if (prompt && efp == stdout)
- fputs("> ", efp);
- IGNORE(fputs(rawbuf, efp));
- }
- strcpy(INLINE+1, rawbuf);
- /* translate the chars to integers in the range 0-126 and store
- * them in the common array "INLINE". Integer values are as follows:
- * 0 = space [ASCII CODE 40 octal, 32 decimal]
- * 1-2 = !" [ASCII 41-42 octal, 33-34 decimal]
- * 3-10 = '()*+,-. [ASCII 47-56 octal, 39-46 decimal]
- * 11-36 = upper-case letters
- * 37-62 = lower-case letters
- * 63 = percent (%) [ASCII 45 octal, 37 decimal]
- * 64-73 = digits, 0 through 9
- * Remaining characters can be translated any way that is convenient;
- * The "TYPE" routine below is used to map them back to characters when
- * necessary. The above mappings are required so that certain special
- * characters are known to fit in 6 bits and/or can be easily spotted.
- * Array elements beyond the end of the line should be filled with 0,
- * and LNLENG should be set to the index of the last character.
- *
- * If the data file uses a character other than space (e.g., tab) to
- * separate numbers, that character should also translate to 0.
- *
- * This procedure may use the map1,map2 arrays to maintain static data for
- * the mapping. MAP2(1) is set to 0 when the program starts
- * and is not changed thereafter unless the routines on this page choose
- * to do so. */
- LNLENG=0;
- for (i=1; i<=(long)sizeof(INLINE) && INLINE[i]!=0; i++) {
- val=INLINE[i];
- INLINE[i]=ascii_to_advent[val];
- if (INLINE[i] != 0)
- LNLENG=i;
- }
- LNPOSN=1;
+ // We have a 'normal' line; leave the loop.
+ break;
+ }
+
+ // Strip trailing newlines from the input
+ input[strcspn(input, "\n")] = 0;
+
+ add_history(input);
+
+ if (!isatty(0)) {
+ echo_input(stdout, input_prompt, input);
+ }
+
+ if (settings.logfp) {
+ echo_input(settings.logfp, "", input);
+ }
+
+ return (input);
+}
+
+bool silent_yes_or_no(void) {
+ bool outcome = false;
+
+ for (;;) {
+ char *reply = get_input();
+ if (reply == NULL) {
+ // LCOV_EXCL_START
+ // Should be unreachable. Reply should never be NULL
+ free(reply);
+ exit(EXIT_SUCCESS);
+ // LCOV_EXCL_STOP
+ }
+ if (strlen(reply) == 0) {
+ free(reply);
+ rspeak(PLEASE_ANSWER);
+ continue;
+ }
+
+ char *firstword = (char *)xcalloc(strlen(reply) + 1);
+ sscanf(reply, "%s", firstword);
+
+ free(reply);
+
+ for (int i = 0; i < (int)strlen(firstword); ++i) {
+ firstword[i] = tolower(firstword[i]);
+ }
+
+ int yes = strncmp("yes", firstword, sizeof("yes") - 1);
+ int y = strncmp("y", firstword, sizeof("y") - 1);
+ int no = strncmp("no", firstword, sizeof("no") - 1);
+ int n = strncmp("n", firstword, sizeof("n") - 1);
+
+ free(firstword);
+
+ if (yes == 0 || y == 0) {
+ outcome = true;
+ break;
+ } else if (no == 0 || n == 0) {
+ outcome = false;
+ break;
+ } else {
+ rspeak(PLEASE_ANSWER);
+ }
+ }
+ return (outcome);
+}
+
+bool yes_or_no(const char *question, const char *yes_response,
+ const char *no_response) {
+ /* Print message X, wait for yes/no answer. If yes, print Y and return
+ * true; if no, print Z and return false. */
+ bool outcome = false;
+
+ for (;;) {
+ speak(question);
+
+ char *reply = get_input();
+ if (reply == NULL) {
+ // LCOV_EXCL_START
+ // Should be unreachable. Reply should never be NULL
+ free(reply);
+ exit(EXIT_SUCCESS);
+ // LCOV_EXCL_STOP
+ }
+
+ if (strlen(reply) == 0) {
+ free(reply);
+ rspeak(PLEASE_ANSWER);
+ continue;
+ }
+
+ char *firstword = (char *)xcalloc(strlen(reply) + 1);
+ sscanf(reply, "%s", firstword);
+
+ free(reply);
+
+ for (int i = 0; i < (int)strlen(firstword); ++i) {
+ firstword[i] = tolower(firstword[i]);
+ }
+
+ int yes = strncmp("yes", firstword, sizeof("yes") - 1);
+ int y = strncmp("y", firstword, sizeof("y") - 1);
+ int no = strncmp("no", firstword, sizeof("no") - 1);
+ int n = strncmp("n", firstword, sizeof("n") - 1);
+
+ free(firstword);
+
+ if (yes == 0 || y == 0) {
+ speak(yes_response);
+ outcome = true;
+ break;
+ } else if (no == 0 || n == 0) {
+ speak(no_response);
+ outcome = false;
+ break;
+ } else {
+ rspeak(PLEASE_ANSWER);
+ }
+ }
+
+ return (outcome);
+}
+
+/* Data structure routines */
+
+static int get_motion_vocab_id(const char *word) {
+ // Return the first motion number that has 'word' as one of its words.
+ for (int i = 0; i < NMOTIONS; ++i) {
+ for (int j = 0; j < motions[i].words.n; ++j) {
+ if (strncasecmp(word, motions[i].words.strs[j],
+ TOKLEN) == 0 &&
+ (strlen(word) > 1 ||
+ strchr(ignore, word[0]) == NULL ||
+ !settings.oldstyle)) {
+ return (i);
+ }
+ }
+ }
+ // If execution reaches here, we didn't find the word.
+ return (WORD_NOT_FOUND);
+}
+
+static int get_object_vocab_id(const char *word) {
+ // Return the first object number that has 'word' as one of its words.
+ for (int i = 0; i < NOBJECTS + 1;
+ ++i) { // FIXME: the + 1 should go when 1-indexing for objects is
+ // removed
+ for (int j = 0; j < objects[i].words.n; ++j) {
+ if (strncasecmp(word, objects[i].words.strs[j],
+ TOKLEN) == 0) {
+ return (i);
+ }
+ }
+ }
+ // If execution reaches here, we didn't find the word.
+ return (WORD_NOT_FOUND);
+}
+
+static int get_action_vocab_id(const char *word) {
+ // Return the first motion number that has 'word' as one of its words.
+ for (int i = 0; i < NACTIONS; ++i) {
+ for (int j = 0; j < actions[i].words.n; ++j) {
+ if (strncasecmp(word, actions[i].words.strs[j],
+ TOKLEN) == 0 &&
+ (strlen(word) > 1 ||
+ strchr(ignore, word[0]) == NULL ||
+ !settings.oldstyle)) {
+ return (i);
+ }
+ }
+ }
+ // If execution reaches here, we didn't find the word.
+ return (WORD_NOT_FOUND);
+}
+
+static bool is_valid_int(const char *str) {
+ /* Returns true if the string passed in is represents a valid integer,
+ * that could then be parsed by atoi() */
+ // Handle negative number
+ if (*str == '-') {
+ ++str;
+ }
+
+ // Handle empty string or just "-". Should never reach this
+ // point, because this is only used with transitive verbs.
+ if (!*str) {
+ return false; // LCOV_EXCL_LINE
+ }
+
+ // Check for non-digit chars in the rest of the string.
+ while (*str) {
+ if (!isdigit(*str)) {
+ return false;
+ } else {
+ ++str;
+ }
+ }
+
return true;
- }
}
-void TYPE(void)
-/* Type the first "LNLENG" characters stored in inline, mapping them
- * from integers to text per the rules described above. INLINE
- * may be changed by this routine. */
-{
- long i;
+static void get_vocab_metadata(const char *word, vocab_t *id,
+ word_type_t *type) {
+ /* Check for an empty string */
+ if (strncmp(word, "", sizeof("")) == 0) {
+ *id = WORD_EMPTY;
+ *type = NO_WORD_TYPE;
+ return;
+ }
- if (LNLENG == 0) {
- printf("\n");
+ vocab_t ref_num;
+
+ ref_num = get_motion_vocab_id(word);
+ // Second conjunct is because the magic-word placeholder is a bit
+ // special
+ if (ref_num != WORD_NOT_FOUND) {
+ *id = ref_num;
+ *type = MOTION;
+ return;
+ }
+
+ ref_num = get_object_vocab_id(word);
+ if (ref_num != WORD_NOT_FOUND) {
+ *id = ref_num;
+ *type = OBJECT;
+ return;
+ }
+
+ ref_num = get_action_vocab_id(word);
+ if (ref_num != WORD_NOT_FOUND && ref_num != PART) {
+ *id = ref_num;
+ *type = ACTION;
+ return;
+ }
+
+ // Check for the reservoir magic word.
+ if (strcasecmp(word, game.zzword) == 0) {
+ *id = PART;
+ *type = ACTION;
+ return;
+ }
+
+ // Check words that are actually numbers.
+ if (is_valid_int(word)) {
+ *id = WORD_EMPTY;
+ *type = NUMERIC;
+ return;
+ }
+
+ *id = WORD_NOT_FOUND;
+ *type = NO_WORD_TYPE;
return;
- }
-
- for (i=1; i<=LNLENG; i++) {
- INLINE[i]=advent_to_ascii[INLINE[i]];
- }
- INLINE[LNLENG+1]=0;
- printf("%s\n", INLINE+1);
- return;
-}
-
-void DATIME(long* d, long* t)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
- *d = (long) tv.tv_sec;
- *t = (long) tv.tv_usec;
+}
+
+static void tokenize(char *raw, command_t *cmd) {
+ /*
+ * Be careful about modifying this. We do not want to nuke the
+ * the speech part or ID from the previous turn.
+ */
+ memset(&cmd->word[0].raw, '\0', sizeof(cmd->word[0].raw));
+ memset(&cmd->word[1].raw, '\0', sizeof(cmd->word[1].raw));
+
+ /* Bound prefix on the %s would be needed to prevent buffer
+ * overflow. but we shortstop this more simply by making each
+ * raw-input buffer as int as the entire input buffer. */
+ sscanf(raw, "%s%s", cmd->word[0].raw, cmd->word[1].raw);
+
+ /* (ESR) In oldstyle mode, simulate the uppercasing and truncating
+ * effect on raw tokens of packing them into sixbit characters, 5
+ * to a 32-bit word. This is something the FORTRAN version did
+ * because archaic FORTRAN had no string types. Don Wood's
+ * mechanical translation of 2.5 to C retained the packing and
+ * thus this misfeature.
+ *
+ * It's philosophically questionable whether this is the right
+ * thing to do even in oldstyle mode. On one hand, the text
+ * mangling was not authorial intent, but a result of limitations
+ * in their tools. On the other, not simulating this misbehavior
+ * goes against the goal of making oldstyle as accurate as
+ * possible an emulation of the original UI.
+ */
+ if (settings.oldstyle) {
+ cmd->word[0].raw[TOKLEN + TOKLEN] =
+ cmd->word[1].raw[TOKLEN + TOKLEN] = '\0';
+ for (size_t i = 0; i < strlen(cmd->word[0].raw); i++) {
+ cmd->word[0].raw[i] = toupper(cmd->word[0].raw[i]);
+ }
+ for (size_t i = 0; i < strlen(cmd->word[1].raw); i++) {
+ cmd->word[1].raw[i] = toupper(cmd->word[1].raw[i]);
+ }
+ }
+
+ /* populate command with parsed vocabulary metadata */
+ get_vocab_metadata(cmd->word[0].raw, &(cmd->word[0].id),
+ &(cmd->word[0].type));
+ get_vocab_metadata(cmd->word[1].raw, &(cmd->word[1].id),
+ &(cmd->word[1].type));
+ cmd->state = TOKENIZED;
+}
+
+bool get_command_input(command_t *command) {
+ /* Get user input on stdin, parse and map to command */
+ char inputbuf[LINESIZE];
+ char *input;
+
+ for (;;) {
+ input = get_input();
+ if (input == NULL) {
+ return false;
+ }
+ if (word_count(input) > 2) {
+ rspeak(TWO_WORDS);
+ free(input);
+ continue;
+ }
+ if (strcmp(input, "") != 0) {
+ break;
+ }
+ free(input);
+ }
+
+ strncpy(inputbuf, input, LINESIZE - 1);
+ free(input);
+
+ tokenize(inputbuf, command);
+
+#ifdef GDEBUG
+ /* Needs to stay synced with enum word_type_t */
+ const char *types[] = {"NO_WORD_TYPE", "MOTION", "OBJECT", "ACTION",
+ "NUMERIC"};
+ /* needs to stay synced with enum speechpart */
+ const char *roles[] = {"unknown", "intransitive", "transitive"};
+ printf(
+ "Command: role = %s type1 = %s, id1 = %d, type2 = %s, id2 = %d\n",
+ roles[command->part], types[command->word[0].type],
+ command->word[0].id, types[command->word[1].type],
+ command->word[1].id);
+#endif
+
+ command->state = GIVEN;
+ return true;
+}
+
+void clear_command(command_t *cmd) {
+ /* Resets the state of the command to empty */
+ cmd->verb = ACT_NULL;
+ cmd->part = unknown;
+ game.oldobj = cmd->obj;
+ cmd->obj = NO_OBJECT;
+ cmd->state = EMPTY;
+}
+
+void juggle(obj_t object) {
+ /* Juggle an object by picking it up and putting it down again, the
+ * purpose being to get the object to the front of the chain of things
+ * at its loc. */
+ loc_t i, j;
+
+ i = game.objects[object].place;
+ j = game.objects[object].fixed;
+ move(object, i);
+ move(object + NOBJECTS, j);
+}
+
+void move(obj_t object, loc_t where) {
+ /* Place any object anywhere by picking it up and dropping it. May
+ * already be toting, in which case the carry is a no-op. Mustn't
+ * pick up objects which are not at any loc, since carry wants to
+ * remove objects from game atloc chains. */
+ loc_t from;
+
+ if (object > NOBJECTS) {
+ from = game.objects[object - NOBJECTS].fixed;
+ } else {
+ from = game.objects[object].place;
+ }
+ /* (ESR) Used to check for !SPECIAL(from). I *think* that was wrong...
+ */
+ if (from != LOC_NOWHERE && from != CARRIED) {
+ carry(object, from);
+ }
+ drop(object, where);
+}
+
+void put(obj_t object, loc_t where, int pval) {
+ /* put() is the same as move(), except it returns a value used to set
+ * up the negated game.prop values for the repository objects. */
+ move(object, where);
+ /* (ESR) Read this in combination with the macro defintions in advebt.h.
+ */
+ game.objects[object].prop = PROP_STASHIFY(pval);
+#ifdef PROP_SET_SEEN
+ PROP_SET_SEEN(object);
+#endif
+}
+
+void carry(obj_t object, loc_t where) {
+ /* Start toting an object, removing it from the list of things at its
+ * former location. Incr holdng unless it was already being toted. If
+ * object>NOBJECTS (moving "fixed" second loc), don't change game.place
+ * or game.holdng. */
+ int temp;
+
+ if (object <= NOBJECTS) {
+ if (game.objects[object].place == CARRIED) {
+ return;
+ }
+ game.objects[object].place = CARRIED;
+
+ /*
+ * Without this conditional your inventory is overcounted
+ * when you pick up the bird while it's caged. This fixes
+ * a cosmetic bug in the original.
+ *
+ * Possibly this check should be skipped whwn oldstyle is on.
+ */
+ if (object != BIRD) {
+ ++game.holdng;
+ }
+ }
+ if (game.locs[where].atloc == object) {
+ game.locs[where].atloc = game.link[object];
+ return;
+ }
+ temp = game.locs[where].atloc;
+ while (game.link[temp] != object) {
+ temp = game.link[temp];
+ }
+ game.link[temp] = game.link[object];
+}
+
+void drop(obj_t object, loc_t where) {
+ /* Place an object at a given loc, prefixing it onto the game atloc
+ * list. Decr game.holdng if the object was being toted. No state
+ * change on the object. */
+ if (object > NOBJECTS) {
+ game.objects[object - NOBJECTS].fixed = where;
+ } else {
+ if (game.objects[object].place == CARRIED) {
+ if (object != BIRD) {
+ /* The bird has to be weightless. This ugly
+ * hack (and the corresponding code in the carry
+ * function) brought to you by the fact that
+ * when the bird is caged, we need to be able to
+ * either 'take bird' or 'take cage' and have
+ * the right thing happen.
+ */
+ --game.holdng;
+ }
+ }
+ game.objects[object].place = where;
+ }
+ if (where == LOC_NOWHERE || where == CARRIED) {
+ return;
+ }
+ game.link[object] = game.locs[where].atloc;
+ game.locs[where].atloc = object;
+}
+
+int atdwrf(loc_t where) {
+ /* Return the index of first dwarf at the given location, zero if no
+ * dwarf is there (or if dwarves not active yet), -1 if all dwarves are
+ * dead. Ignore the pirate (6th dwarf). */
+ int at;
+
+ at = 0;
+ if (game.dflag < 2) {
+ return at;
+ }
+ at = -1;
+ for (int i = 1; i <= NDWARVES - 1; i++) {
+ if (game.dwarves[i].loc == where) {
+ return i;
+ }
+ if (game.dwarves[i].loc != 0) {
+ at = 0;
+ }
+ }
+ return at;
+}
+
+/* Utility routines (setbit, tstbit, set_seed, get_next_lcg_value,
+ * randrange) */
+
+int setbit(int bit) {
+ /* Returns 2**bit for use in constructing bit-masks. */
+ return (1L << bit);
+}
+
+bool tstbit(int mask, int bit) {
+ /* Returns true if the specified bit is set in the mask. */
+ return (mask & (1 << bit)) != 0;
+}
+
+void set_seed(int32_t seedval) {
+ /* Set the LCG1 seed */
+ game.lcg_x = seedval % LCG_M;
+ if (game.lcg_x < 0) {
+ game.lcg_x = LCG_M + game.lcg_x;
+ }
+ // once seed is set, we need to generate the Z`ZZZ word
+ for (int i = 0; i < 5; ++i) {
+ game.zzword[i] = 'A' + randrange(26);
+ }
+ game.zzword[1] = '\''; // force second char to apostrophe
+ game.zzword[5] = '\0';
+}
+
+static int32_t get_next_lcg_value(void) {
+ /* Return the LCG's current value, and then iterate it. */
+ int32_t old_x = game.lcg_x;
+ game.lcg_x = (LCG_A * game.lcg_x + LCG_C) % LCG_M;
+ if (settings.debug) {
+ printf("# random %d\n", old_x); // LCOV_EXCL_LINE
+ }
+ return old_x;
+}
+
+int32_t randrange(int32_t range) {
+ /* Return a random integer from [0, range). */
+ return range * get_next_lcg_value() / LCG_M;
+}
+
+// LCOV_EXCL_START
+void bug(enum bugtype num, const char *error_string) {
+ fprintf(stderr, "Fatal error %d, %s.\n", num, error_string);
+ exit(EXIT_FAILURE);
+}
+// LCOV_EXCL_STOP
+
+void state_change(obj_t obj, int state) {
+ /* Object must have a change-message list for this to be useful; only
+ * some do */
+ game.objects[obj].prop = state;
+ pspeak(obj, change, true, state);
}
/* end */
projects / open-adventure.git / blobdiff