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-rw-r--r--contrib/nvi/common/msg.c895
1 files changed, 895 insertions, 0 deletions
diff --git a/contrib/nvi/common/msg.c b/contrib/nvi/common/msg.c
new file mode 100644
index 0000000..2b18082
--- /dev/null
+++ b/contrib/nvi/common/msg.c
@@ -0,0 +1,895 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ * Copyright (c) 1991, 1993, 1994, 1995, 1996
+ * Keith Bostic. All rights reserved.
+ *
+ * See the LICENSE file for redistribution information.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)msg.c 10.48 (Berkeley) 9/15/96";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/types.h> /* XXX: param.h may not have included types.h */
+#include <sys/queue.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include <bitstring.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+#include "common.h"
+#include "../vi/vi.h"
+
+/*
+ * msgq --
+ * Display a message.
+ *
+ * PUBLIC: void msgq __P((SCR *, mtype_t, const char *, ...));
+ */
+void
+#ifdef __STDC__
+msgq(SCR *sp, mtype_t mt, const char *fmt, ...)
+#else
+msgq(sp, mt, fmt, va_alist)
+ SCR *sp;
+ mtype_t mt;
+ const char *fmt;
+ va_dcl
+#endif
+{
+#ifndef NL_ARGMAX
+#define __NL_ARGMAX 20 /* Set to 9 by System V. */
+ struct {
+ const char *str; /* String pointer. */
+ size_t arg; /* Argument number. */
+ size_t prefix; /* Prefix string length. */
+ size_t skip; /* Skipped string length. */
+ size_t suffix; /* Suffix string length. */
+ } str[__NL_ARGMAX];
+#endif
+ static int reenter; /* STATIC: Re-entrancy check. */
+ CHAR_T ch;
+ GS *gp;
+ size_t blen, cnt1, cnt2, len, mlen, nlen, soff;
+ const char *p, *t, *u;
+ char *bp, *mp, *rbp, *s_rbp;
+ va_list ap;
+
+ /*
+ * !!!
+ * It's possible to enter msg when there's no screen to hold the
+ * message. If sp is NULL, ignore the special cases and put the
+ * message out to stderr.
+ */
+ if (sp == NULL) {
+ gp = NULL;
+ if (mt == M_BERR)
+ mt = M_ERR;
+ else if (mt == M_VINFO)
+ mt = M_INFO;
+ } else {
+ gp = sp->gp;
+ switch (mt) {
+ case M_BERR:
+ if (F_ISSET(sp, SC_VI) && !O_ISSET(sp, O_VERBOSE)) {
+ F_SET(gp, G_BELLSCHED);
+ return;
+ }
+ mt = M_ERR;
+ break;
+ case M_VINFO:
+ if (!O_ISSET(sp, O_VERBOSE))
+ return;
+ mt = M_INFO;
+ /* FALLTHROUGH */
+ case M_INFO:
+ if (F_ISSET(sp, SC_EX_SILENT))
+ return;
+ break;
+ case M_ERR:
+ case M_SYSERR:
+ break;
+ default:
+ abort();
+ }
+ }
+
+ /*
+ * It's possible to reenter msg when it allocates space. We're
+ * probably dead anyway, but there's no reason to drop core.
+ *
+ * XXX
+ * Yes, there's a race, but it should only be two instructions.
+ */
+ if (reenter++)
+ return;
+
+ /* Get space for the message. */
+ nlen = 1024;
+ if (0) {
+retry: FREE_SPACE(sp, bp, blen);
+ nlen *= 2;
+ }
+ bp = NULL;
+ blen = 0;
+ GET_SPACE_GOTO(sp, bp, blen, nlen);
+
+ /*
+ * Error prefix.
+ *
+ * mp: pointer to the current next character to be written
+ * mlen: length of the already written characters
+ * blen: total length of the buffer
+ */
+#define REM (blen - mlen)
+ mp = bp;
+ mlen = 0;
+ if (mt == M_SYSERR) {
+ p = msg_cat(sp, "020|Error: ", &len);
+ if (REM < len)
+ goto retry;
+ memcpy(mp, p, len);
+ mp += len;
+ mlen += len;
+ }
+
+ /*
+ * If we're running an ex command that the user didn't enter, display
+ * the file name and line number prefix.
+ */
+ if ((mt == M_ERR || mt == M_SYSERR) &&
+ sp != NULL && gp != NULL && gp->if_name != NULL) {
+ for (p = gp->if_name; *p != '\0'; ++p) {
+ len = snprintf(mp, REM, "%s", KEY_NAME(sp, *p));
+ mp += len;
+ if ((mlen += len) > blen)
+ goto retry;
+ }
+ len = snprintf(mp, REM, ", %d: ", gp->if_lno);
+ mp += len;
+ if ((mlen += len) > blen)
+ goto retry;
+ }
+
+ /* If nothing to format, we're done. */
+ if (fmt == NULL)
+ goto nofmt;
+ fmt = msg_cat(sp, fmt, NULL);
+
+#ifndef NL_ARGMAX
+ /*
+ * Nvi should run on machines that don't support the numbered argument
+ * specifications (%[digit]*$). We do this by reformatting the string
+ * so that we can hand it to vsprintf(3) and it will use the arguments
+ * in the right order. When vsprintf returns, we put the string back
+ * into the right order. It's undefined, according to SVID III, to mix
+ * numbered argument specifications with the standard style arguments,
+ * so this should be safe.
+ *
+ * In addition, we also need a character that is known to not occur in
+ * any vi message, for separating the parts of the string. As callers
+ * of msgq are responsible for making sure that all the non-printable
+ * characters are formatted for printing before calling msgq, we use a
+ * random non-printable character selected at terminal initialization
+ * time. This code isn't fast by any means, but as messages should be
+ * relatively short and normally have only a few arguments, it won't be
+ * too bad. Regardless, nobody has come up with any other solution.
+ *
+ * The result of this loop is an array of pointers into the message
+ * string, with associated lengths and argument numbers. The array
+ * is in the "correct" order, and the arg field contains the argument
+ * order.
+ */
+ for (p = fmt, soff = 0; soff < __NL_ARGMAX;) {
+ for (t = p; *p != '\0' && *p != '%'; ++p);
+ if (*p == '\0')
+ break;
+ ++p;
+ if (!isdigit(*p)) {
+ if (*p == '%')
+ ++p;
+ continue;
+ }
+ for (u = p; *++p != '\0' && isdigit(*p););
+ if (*p != '$')
+ continue;
+
+ /* Up to, and including the % character. */
+ str[soff].str = t;
+ str[soff].prefix = u - t;
+
+ /* Up to, and including the $ character. */
+ str[soff].arg = atoi(u);
+ str[soff].skip = (p - u) + 1;
+ if (str[soff].arg >= __NL_ARGMAX)
+ goto ret;
+
+ /* Up to, and including the conversion character. */
+ for (u = p; (ch = *++p) != '\0';)
+ if (isalpha(ch) &&
+ strchr("diouxXfeEgGcspn", ch) != NULL)
+ break;
+ str[soff].suffix = p - u;
+ if (ch != '\0')
+ ++p;
+ ++soff;
+ }
+
+ /* If no magic strings, we're done. */
+ if (soff == 0)
+ goto format;
+
+ /* Get space for the reordered strings. */
+ if ((rbp = malloc(nlen)) == NULL)
+ goto ret;
+ s_rbp = rbp;
+
+ /*
+ * Reorder the strings into the message string based on argument
+ * order.
+ *
+ * !!!
+ * We ignore arguments that are out of order, i.e. if we don't find
+ * an argument, we continue. Assume (almost certainly incorrectly)
+ * that whoever created the string knew what they were doing.
+ *
+ * !!!
+ * Brute force "sort", but since we don't expect more than one or two
+ * arguments in a string, the setup cost of a fast sort will be more
+ * expensive than the loop.
+ */
+ for (cnt1 = 1; cnt1 <= soff; ++cnt1)
+ for (cnt2 = 0; cnt2 < soff; ++cnt2)
+ if (cnt1 == str[cnt2].arg) {
+ memmove(s_rbp, str[cnt2].str, str[cnt2].prefix);
+ memmove(s_rbp + str[cnt2].prefix,
+ str[cnt2].str + str[cnt2].prefix +
+ str[cnt2].skip, str[cnt2].suffix);
+ s_rbp += str[cnt2].prefix + str[cnt2].suffix;
+ *s_rbp++ =
+ gp == NULL ? DEFAULT_NOPRINT : gp->noprint;
+ break;
+ }
+ *s_rbp = '\0';
+ fmt = rbp;
+#endif
+
+format: /* Format the arguments into the string. */
+#ifdef __STDC__
+ va_start(ap, fmt);
+#else
+ va_start(ap);
+#endif
+ len = vsnprintf(mp, REM, fmt, ap);
+ va_end(ap);
+ if (len >= nlen)
+ goto retry;
+
+#ifndef NL_ARGMAX
+ if (soff == 0)
+ goto nofmt;
+
+ /*
+ * Go through the resulting string, and, for each separator character
+ * separated string, enter its new starting position and length in the
+ * array.
+ */
+ for (p = t = mp, cnt1 = 1,
+ ch = gp == NULL ? DEFAULT_NOPRINT : gp->noprint; *p != '\0'; ++p)
+ if (*p == ch) {
+ for (cnt2 = 0; cnt2 < soff; ++cnt2)
+ if (str[cnt2].arg == cnt1)
+ break;
+ str[cnt2].str = t;
+ str[cnt2].prefix = p - t;
+ t = p + 1;
+ ++cnt1;
+ }
+
+ /*
+ * Reorder the strings once again, putting them back into the
+ * message buffer.
+ *
+ * !!!
+ * Note, the length of the message gets decremented once for
+ * each substring, when we discard the separator character.
+ */
+ for (s_rbp = rbp, cnt1 = 0; cnt1 < soff; ++cnt1) {
+ memmove(rbp, str[cnt1].str, str[cnt1].prefix);
+ rbp += str[cnt1].prefix;
+ --len;
+ }
+ memmove(mp, s_rbp, rbp - s_rbp);
+
+ /* Free the reordered string memory. */
+ free(s_rbp);
+#endif
+
+nofmt: mp += len;
+ if ((mlen += len) > blen)
+ goto retry;
+ if (mt == M_SYSERR) {
+ len = snprintf(mp, REM, ": %s", strerror(errno));
+ mp += len;
+ if ((mlen += len) > blen)
+ goto retry;
+ mt = M_ERR;
+ }
+
+ /* Add trailing newline. */
+ if ((mlen += 1) > blen)
+ goto retry;
+ *mp = '\n';
+
+ if (sp != NULL)
+ (void)ex_fflush(sp);
+ if (gp != NULL)
+ gp->scr_msg(sp, mt, bp, mlen);
+ else
+ (void)fprintf(stderr, "%.*s", (int)mlen, bp);
+
+ /* Cleanup. */
+ret: FREE_SPACE(sp, bp, blen);
+alloc_err:
+ reenter = 0;
+}
+
+/*
+ * msgq_str --
+ * Display a message with an embedded string.
+ *
+ * PUBLIC: void msgq_str __P((SCR *, mtype_t, char *, char *));
+ */
+void
+msgq_str(sp, mtype, str, fmt)
+ SCR *sp;
+ mtype_t mtype;
+ char *str, *fmt;
+{
+ int nf, sv_errno;
+ char *p;
+
+ if (str == NULL) {
+ msgq(sp, mtype, fmt);
+ return;
+ }
+
+ sv_errno = errno;
+ p = msg_print(sp, str, &nf);
+ errno = sv_errno;
+ msgq(sp, mtype, fmt, p);
+ if (nf)
+ FREE_SPACE(sp, p, 0);
+}
+
+/*
+ * mod_rpt --
+ * Report on the lines that changed.
+ *
+ * !!!
+ * Historic vi documentation (USD:15-8) claimed that "The editor will also
+ * always tell you when a change you make affects text which you cannot see."
+ * This wasn't true -- edit a large file and do "100d|1". We don't implement
+ * this semantic since it requires tracking each line that changes during a
+ * command instead of just keeping count.
+ *
+ * Line counts weren't right in historic vi, either. For example, given the
+ * file:
+ * abc
+ * def
+ * the command 2d}, from the 'b' would report that two lines were deleted,
+ * not one.
+ *
+ * PUBLIC: void mod_rpt __P((SCR *));
+ */
+void
+mod_rpt(sp)
+ SCR *sp;
+{
+ static char * const action[] = {
+ "293|added",
+ "294|changed",
+ "295|deleted",
+ "296|joined",
+ "297|moved",
+ "298|shifted",
+ "299|yanked",
+ };
+ static char * const lines[] = {
+ "300|line",
+ "301|lines",
+ };
+ recno_t total;
+ u_long rptval;
+ int first, cnt;
+ size_t blen, len, tlen;
+ const char *t;
+ char * const *ap;
+ char *bp, *p;
+
+ /* Change reports are turned off in batch mode. */
+ if (F_ISSET(sp, SC_EX_SILENT))
+ return;
+
+ /* Reset changing line number. */
+ sp->rptlchange = OOBLNO;
+
+ /*
+ * Don't build a message if not enough changed.
+ *
+ * !!!
+ * And now, a vi clone test. Historically, vi reported if the number
+ * of changed lines was > than the value, not >=, unless it was a yank
+ * command, which used >=. No lie. Furthermore, an action was never
+ * reported for a single line action. This is consistent for actions
+ * other than yank, but yank didn't report single line actions even if
+ * the report edit option was set to 1. In addition, setting report to
+ * 0 in the 4BSD historic vi was equivalent to setting it to 1, for an
+ * unknown reason (this bug was fixed in System III/V at some point).
+ * I got complaints, so nvi conforms to System III/V historic practice
+ * except that we report a yank of 1 line if report is set to 1.
+ */
+#define ARSIZE(a) sizeof(a) / sizeof (*a)
+#define MAXNUM 25
+ rptval = O_VAL(sp, O_REPORT);
+ for (cnt = 0, total = 0; cnt < ARSIZE(action); ++cnt)
+ total += sp->rptlines[cnt];
+ if (total == 0)
+ return;
+ if (total <= rptval && sp->rptlines[L_YANKED] < rptval) {
+ for (cnt = 0; cnt < ARSIZE(action); ++cnt)
+ sp->rptlines[cnt] = 0;
+ return;
+ }
+
+ /* Build and display the message. */
+ GET_SPACE_GOTO(sp, bp, blen, sizeof(action) * MAXNUM + 1);
+ for (p = bp, first = 1, tlen = 0,
+ ap = action, cnt = 0; cnt < ARSIZE(action); ++ap, ++cnt)
+ if (sp->rptlines[cnt] != 0) {
+ if (first)
+ first = 0;
+ else {
+ *p++ = ';';
+ *p++ = ' ';
+ tlen += 2;
+ }
+ len = snprintf(p, MAXNUM, "%lu ", sp->rptlines[cnt]);
+ p += len;
+ tlen += len;
+ t = msg_cat(sp,
+ lines[sp->rptlines[cnt] == 1 ? 0 : 1], &len);
+ memcpy(p, t, len);
+ p += len;
+ tlen += len;
+ *p++ = ' ';
+ ++tlen;
+ t = msg_cat(sp, *ap, &len);
+ memcpy(p, t, len);
+ p += len;
+ tlen += len;
+ sp->rptlines[cnt] = 0;
+ }
+
+ /* Add trailing newline. */
+ *p = '\n';
+ ++tlen;
+
+ (void)ex_fflush(sp);
+ sp->gp->scr_msg(sp, M_INFO, bp, tlen);
+
+ FREE_SPACE(sp, bp, blen);
+alloc_err:
+ return;
+
+#undef ARSIZE
+#undef MAXNUM
+}
+
+/*
+ * msgq_status --
+ * Report on the file's status.
+ *
+ * PUBLIC: void msgq_status __P((SCR *, recno_t, u_int));
+ */
+void
+msgq_status(sp, lno, flags)
+ SCR *sp;
+ recno_t lno;
+ u_int flags;
+{
+ static int poisoned;
+ recno_t last;
+ size_t blen, len;
+ int cnt, needsep;
+ const char *t;
+ char **ap, *bp, *np, *p, *s;
+
+ /* Get sufficient memory. */
+ len = strlen(sp->frp->name);
+ GET_SPACE_GOTO(sp, bp, blen, len * MAX_CHARACTER_COLUMNS + 128);
+ p = bp;
+
+ /* Copy in the filename. */
+ for (p = bp, t = sp->frp->name; *t != '\0'; ++t) {
+ len = KEY_LEN(sp, *t);
+ memcpy(p, KEY_NAME(sp, *t), len);
+ p += len;
+ }
+ np = p;
+ *p++ = ':';
+ *p++ = ' ';
+
+ /* Copy in the argument count. */
+ if (F_ISSET(sp, SC_STATUS_CNT) && sp->argv != NULL) {
+ for (cnt = 0, ap = sp->argv; *ap != NULL; ++ap, ++cnt);
+ if (cnt > 1) {
+ (void)sprintf(p,
+ msg_cat(sp, "317|%d files to edit", NULL), cnt);
+ p += strlen(p);
+ *p++ = ':';
+ *p++ = ' ';
+ }
+ F_CLR(sp, SC_STATUS_CNT);
+ }
+
+ /*
+ * See nvi/exf.c:file_init() for a description of how and when the
+ * read-only bit is set.
+ *
+ * !!!
+ * The historic display for "name changed" was "[Not edited]".
+ */
+ needsep = 0;
+ if (F_ISSET(sp->frp, FR_NEWFILE)) {
+ F_CLR(sp->frp, FR_NEWFILE);
+ t = msg_cat(sp, "021|new file", &len);
+ memcpy(p, t, len);
+ p += len;
+ needsep = 1;
+ } else {
+ if (F_ISSET(sp->frp, FR_NAMECHANGE)) {
+ t = msg_cat(sp, "022|name changed", &len);
+ memcpy(p, t, len);
+ p += len;
+ needsep = 1;
+ }
+ if (needsep) {
+ *p++ = ',';
+ *p++ = ' ';
+ }
+ if (F_ISSET(sp->ep, F_MODIFIED))
+ t = msg_cat(sp, "023|modified", &len);
+ else
+ t = msg_cat(sp, "024|unmodified", &len);
+ memcpy(p, t, len);
+ p += len;
+ needsep = 1;
+ }
+ if (F_ISSET(sp->frp, FR_UNLOCKED)) {
+ if (needsep) {
+ *p++ = ',';
+ *p++ = ' ';
+ }
+ t = msg_cat(sp, "025|UNLOCKED", &len);
+ memcpy(p, t, len);
+ p += len;
+ needsep = 1;
+ }
+ if (O_ISSET(sp, O_READONLY)) {
+ if (needsep) {
+ *p++ = ',';
+ *p++ = ' ';
+ }
+ t = msg_cat(sp, "026|readonly", &len);
+ memcpy(p, t, len);
+ p += len;
+ needsep = 1;
+ }
+ if (needsep) {
+ *p++ = ':';
+ *p++ = ' ';
+ }
+ if (LF_ISSET(MSTAT_SHOWLAST)) {
+ if (db_last(sp, &last))
+ return;
+ if (last == 0) {
+ t = msg_cat(sp, "028|empty file", &len);
+ memcpy(p, t, len);
+ p += len;
+ } else {
+ t = msg_cat(sp, "027|line %lu of %lu [%ld%%]", &len);
+ (void)sprintf(p, t, lno, last, (lno * 100) / last);
+ p += strlen(p);
+ }
+ } else {
+ t = msg_cat(sp, "029|line %lu", &len);
+ (void)sprintf(p, t, lno);
+ p += strlen(p);
+ }
+#ifdef DEBUG
+ (void)sprintf(p, " (pid %lu)", (u_long)getpid());
+ p += strlen(p);
+#endif
+ *p++ = '\n';
+ len = p - bp;
+
+ /*
+ * There's a nasty problem with long path names. Cscope and tags files
+ * can result in long paths and vi will request a continuation key from
+ * the user as soon as it starts the screen. Unfortunately, the user
+ * has already typed ahead, and chaos results. If we assume that the
+ * characters in the filenames and informational messages only take a
+ * single screen column each, we can trim the filename.
+ *
+ * XXX
+ * Status lines get put up at fairly awkward times. For example, when
+ * you do a filter read (e.g., :read ! echo foo) in the top screen of a
+ * split screen, we have to repaint the status lines for all the screens
+ * below the top screen. We don't want users having to enter continue
+ * characters for those screens. Make it really hard to screw this up.
+ */
+ s = bp;
+ if (LF_ISSET(MSTAT_TRUNCATE) && len > sp->cols) {
+ for (; s < np && (*s != '/' || (p - s) > sp->cols - 3); ++s);
+ if (s == np) {
+ s = p - (sp->cols - 5);
+ *--s = ' ';
+ }
+ *--s = '.';
+ *--s = '.';
+ *--s = '.';
+ len = p - s;
+ }
+
+ /* Flush any waiting ex messages. */
+ (void)ex_fflush(sp);
+
+ sp->gp->scr_msg(sp, M_INFO, s, len);
+
+ FREE_SPACE(sp, bp, blen);
+alloc_err:
+ return;
+}
+
+/*
+ * msg_open --
+ * Open the message catalogs.
+ *
+ * PUBLIC: int msg_open __P((SCR *, char *));
+ */
+int
+msg_open(sp, file)
+ SCR *sp;
+ char *file;
+{
+ /*
+ * !!!
+ * Assume that the first file opened is the system default, and that
+ * all subsequent ones user defined. Only display error messages
+ * if we can't open the user defined ones -- it's useful to know if
+ * the system one wasn't there, but if nvi is being shipped with an
+ * installed system, the file will be there, if it's not, then the
+ * message will be repeated every time nvi is started up.
+ */
+ static int first = 1;
+ DB *db;
+ DBT data, key;
+ recno_t msgno;
+ char *p, *t, buf[MAXPATHLEN];
+
+ if ((p = strrchr(file, '/')) != NULL && p[1] == '\0' &&
+ ((t = getenv("LC_MESSAGES")) != NULL && t[0] != '\0' ||
+ (t = getenv("LANG")) != NULL && t[0] != '\0')) {
+ (void)snprintf(buf, sizeof(buf), "%s%s", file, t);
+ p = buf;
+ } else
+ p = file;
+ if ((db = dbopen(p,
+ O_NONBLOCK | O_RDONLY, 0, DB_RECNO, NULL)) == NULL) {
+ if (first) {
+ first = 0;
+ return (1);
+ }
+ msgq_str(sp, M_SYSERR, p, "%s");
+ return (1);
+ }
+
+ /*
+ * Test record 1 for the magic string. The msgq call is here so
+ * the message catalog build finds it.
+ */
+#define VMC "VI_MESSAGE_CATALOG"
+ key.data = &msgno;
+ key.size = sizeof(recno_t);
+ msgno = 1;
+ if (db->get(db, &key, &data, 0) != 0 ||
+ data.size != sizeof(VMC) - 1 ||
+ memcmp(data.data, VMC, sizeof(VMC) - 1)) {
+ (void)db->close(db);
+ if (first) {
+ first = 0;
+ return (1);
+ }
+ msgq_str(sp, M_ERR, p,
+ "030|The file %s is not a message catalog");
+ return (1);
+ }
+ first = 0;
+
+ if (sp->gp->msg != NULL)
+ (void)sp->gp->msg->close(sp->gp->msg);
+ sp->gp->msg = db;
+ return (0);
+}
+
+/*
+ * msg_close --
+ * Close the message catalogs.
+ *
+ * PUBLIC: void msg_close __P((GS *));
+ */
+void
+msg_close(gp)
+ GS *gp;
+{
+ if (gp->msg != NULL)
+ (void)gp->msg->close(gp->msg);
+}
+
+/*
+ * msg_cont --
+ * Return common continuation messages.
+ *
+ * PUBLIC: const char *msg_cmsg __P((SCR *, cmsg_t, size_t *));
+ */
+const char *
+msg_cmsg(sp, which, lenp)
+ SCR *sp;
+ cmsg_t which;
+ size_t *lenp;
+{
+ switch (which) {
+ case CMSG_CONF:
+ return (msg_cat(sp, "268|confirm? [ynq]", lenp));
+ case CMSG_CONT:
+ return (msg_cat(sp, "269|Press any key to continue: ", lenp));
+ case CMSG_CONT_EX:
+ return (msg_cat(sp,
+ "270|Press any key to continue [: to enter more ex commands]: ",
+ lenp));
+ case CMSG_CONT_R:
+ return (msg_cat(sp, "161|Press Enter to continue: ", lenp));
+ case CMSG_CONT_S:
+ return (msg_cat(sp, "275| cont?", lenp));
+ case CMSG_CONT_Q:
+ return (msg_cat(sp,
+ "271|Press any key to continue [q to quit]: ", lenp));
+ default:
+ abort();
+ }
+ /* NOTREACHED */
+}
+
+/*
+ * msg_cat --
+ * Return a single message from the catalog, plus its length.
+ *
+ * !!!
+ * Only a single catalog message can be accessed at a time, if multiple
+ * ones are needed, they must be copied into local memory.
+ *
+ * PUBLIC: const char *msg_cat __P((SCR *, const char *, size_t *));
+ */
+const char *
+msg_cat(sp, str, lenp)
+ SCR *sp;
+ const char *str;
+ size_t *lenp;
+{
+ GS *gp;
+ DBT data, key;
+ recno_t msgno;
+
+ /*
+ * If it's not a catalog message, i.e. has doesn't have a leading
+ * number and '|' symbol, we're done.
+ */
+ if (isdigit(str[0]) &&
+ isdigit(str[1]) && isdigit(str[2]) && str[3] == '|') {
+ key.data = &msgno;
+ key.size = sizeof(recno_t);
+ msgno = atoi(str);
+
+ /*
+ * XXX
+ * Really sleazy hack -- we put an extra character on the
+ * end of the format string, and then we change it to be
+ * the nul termination of the string. There ought to be
+ * a better way. Once we can allocate multiple temporary
+ * memory buffers, maybe we can use one of them instead.
+ */
+ gp = sp == NULL ? NULL : sp->gp;
+ if (gp != NULL && gp->msg != NULL &&
+ gp->msg->get(gp->msg, &key, &data, 0) == 0 &&
+ data.size != 0) {
+ if (lenp != NULL)
+ *lenp = data.size - 1;
+ ((char *)data.data)[data.size - 1] = '\0';
+ return (data.data);
+ }
+ str = &str[4];
+ }
+ if (lenp != NULL)
+ *lenp = strlen(str);
+ return (str);
+}
+
+/*
+ * msg_print --
+ * Return a printable version of a string, in allocated memory.
+ *
+ * PUBLIC: char *msg_print __P((SCR *, const char *, int *));
+ */
+char *
+msg_print(sp, s, needfree)
+ SCR *sp;
+ const char *s;
+ int *needfree;
+{
+ size_t blen, nlen;
+ const char *cp;
+ char *bp, *ep, *p, *t;
+
+ *needfree = 0;
+
+ for (cp = s; *cp != '\0'; ++cp)
+ if (!isprint(*cp))
+ break;
+ if (*cp == '\0')
+ return ((char *)s); /* SAFE: needfree set to 0. */
+
+ nlen = 0;
+ if (0) {
+retry: if (sp == NULL)
+ free(bp);
+ else
+ FREE_SPACE(sp, bp, blen);
+ needfree = 0;
+ }
+ nlen += 256;
+ if (sp == NULL) {
+ if ((bp = malloc(nlen)) == NULL)
+ goto alloc_err;
+ } else
+ GET_SPACE_GOTO(sp, bp, blen, nlen);
+ if (0) {
+alloc_err: return ("");
+ }
+ *needfree = 1;
+
+ for (p = bp, ep = (bp + blen) - 1, cp = s; *cp != '\0' && p < ep; ++cp)
+ for (t = KEY_NAME(sp, *cp); *t != '\0' && p < ep; *p++ = *t++);
+ if (p == ep)
+ goto retry;
+ *p = '\0';
+ return (bp);
+}
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