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ncursesw-morphos/progs/dump_entry.c
Thomas E. Dickey 027ae42953 ncurses 5.6
2006-12-17 23:32:42 -05:00

1258 lines
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/****************************************************************************
* Copyright (c) 1998-2005,2006 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 *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996 on *
****************************************************************************/
#define __INTERNAL_CAPS_VISIBLE
#include <progs.priv.h>
#include "dump_entry.h"
#include "termsort.c" /* this C file is generated */
#include <parametrized.h> /* so is this */
MODULE_ID("$Id: dump_entry.c,v 1.79 2006/09/30 20:18:15 tom Exp $")
#define INDENT 8
#define DISCARD(string) string = ABSENT_STRING
#define PRINTF (void) printf
typedef struct {
char *text;
size_t used;
size_t size;
} DYNBUF;
static int tversion; /* terminfo version */
static int outform; /* output format to use */
static int sortmode; /* sort mode to use */
static int width = 60; /* max line width for listings */
static int column; /* current column, limited by 'width' */
static int oldcol; /* last value of column before wrap */
static bool pretty; /* true if we format if-then-else strings */
static char *save_sgr;
static DYNBUF outbuf;
static DYNBUF tmpbuf;
/* indirection pointers for implementing sort and display modes */
static const PredIdx *bool_indirect, *num_indirect, *str_indirect;
static NCURSES_CONST char *const *bool_names;
static NCURSES_CONST char *const *num_names;
static NCURSES_CONST char *const *str_names;
static const char *separator, *trailer;
/* cover various ports and variants of terminfo */
#define V_ALLCAPS 0 /* all capabilities (SVr4, XSI, ncurses) */
#define V_SVR1 1 /* SVR1, Ultrix */
#define V_HPUX 2 /* HP/UX */
#define V_AIX 3 /* AIX */
#define V_BSD 4 /* BSD */
#if NCURSES_XNAMES
#define OBSOLETE(n) (!_nc_user_definable && (n[0] == 'O' && n[1] == 'T'))
#else
#define OBSOLETE(n) (n[0] == 'O' && n[1] == 'T')
#endif
#define isObsolete(f,n) ((f == F_TERMINFO || f == F_VARIABLE) && OBSOLETE(n))
#if NCURSES_XNAMES
#define BoolIndirect(j) ((j >= BOOLCOUNT) ? (j) : ((sortmode == S_NOSORT) ? j : bool_indirect[j]))
#define NumIndirect(j) ((j >= NUMCOUNT) ? (j) : ((sortmode == S_NOSORT) ? j : num_indirect[j]))
#define StrIndirect(j) ((j >= STRCOUNT) ? (j) : ((sortmode == S_NOSORT) ? j : str_indirect[j]))
#else
#define BoolIndirect(j) ((sortmode == S_NOSORT) ? (j) : bool_indirect[j])
#define NumIndirect(j) ((sortmode == S_NOSORT) ? (j) : num_indirect[j])
#define StrIndirect(j) ((sortmode == S_NOSORT) ? (j) : str_indirect[j])
#endif
static void
strncpy_DYN(DYNBUF * dst, const char *src, size_t need)
{
size_t want = need + dst->used + 1;
if (want > dst->size) {
dst->size += (want + 1024); /* be generous */
dst->text = typeRealloc(char, dst->size, dst->text);
}
(void) strncpy(dst->text + dst->used, src, need);
dst->used += need;
dst->text[dst->used] = 0;
}
static void
strcpy_DYN(DYNBUF * dst, const char *src)
{
if (src == 0) {
dst->used = 0;
strcpy_DYN(dst, "");
} else {
strncpy_DYN(dst, src, strlen(src));
}
}
#if NO_LEAKS
static void
free_DYN(DYNBUF * p)
{
if (p->text != 0)
free(p->text);
p->text = 0;
p->size = 0;
p->used = 0;
}
void
_nc_leaks_dump_entry(void)
{
free_DYN(&outbuf);
free_DYN(&tmpbuf);
}
#endif
NCURSES_CONST char *
nametrans(const char *name)
/* translate a capability name from termcap to terminfo */
{
const struct name_table_entry *np;
if ((np = _nc_find_entry(name, _nc_get_hash_table(0))) != 0)
switch (np->nte_type) {
case BOOLEAN:
if (bool_from_termcap[np->nte_index])
return (boolcodes[np->nte_index]);
break;
case NUMBER:
if (num_from_termcap[np->nte_index])
return (numcodes[np->nte_index]);
break;
case STRING:
if (str_from_termcap[np->nte_index])
return (strcodes[np->nte_index]);
break;
}
return (0);
}
void
dump_init(const char *version, int mode, int sort, int twidth, int traceval,
bool formatted)
/* set up for entry display */
{
width = twidth;
pretty = formatted;
/* versions */
if (version == 0)
tversion = V_ALLCAPS;
else if (!strcmp(version, "SVr1") || !strcmp(version, "SVR1")
|| !strcmp(version, "Ultrix"))
tversion = V_SVR1;
else if (!strcmp(version, "HP"))
tversion = V_HPUX;
else if (!strcmp(version, "AIX"))
tversion = V_AIX;
else if (!strcmp(version, "BSD"))
tversion = V_BSD;
else
tversion = V_ALLCAPS;
/* implement display modes */
switch (outform = mode) {
case F_LITERAL:
case F_TERMINFO:
bool_names = boolnames;
num_names = numnames;
str_names = strnames;
separator = twidth ? ", " : ",";
trailer = "\n\t";
break;
case F_VARIABLE:
bool_names = boolfnames;
num_names = numfnames;
str_names = strfnames;
separator = twidth ? ", " : ",";
trailer = "\n\t";
break;
case F_TERMCAP:
case F_TCONVERR:
bool_names = boolcodes;
num_names = numcodes;
str_names = strcodes;
separator = ":";
trailer = "\\\n\t:";
break;
}
/* implement sort modes */
switch (sortmode = sort) {
case S_NOSORT:
if (traceval)
(void) fprintf(stderr,
"%s: sorting by term structure order\n", _nc_progname);
break;
case S_TERMINFO:
if (traceval)
(void) fprintf(stderr,
"%s: sorting by terminfo name order\n", _nc_progname);
bool_indirect = bool_terminfo_sort;
num_indirect = num_terminfo_sort;
str_indirect = str_terminfo_sort;
break;
case S_VARIABLE:
if (traceval)
(void) fprintf(stderr,
"%s: sorting by C variable order\n", _nc_progname);
bool_indirect = bool_variable_sort;
num_indirect = num_variable_sort;
str_indirect = str_variable_sort;
break;
case S_TERMCAP:
if (traceval)
(void) fprintf(stderr,
"%s: sorting by termcap name order\n", _nc_progname);
bool_indirect = bool_termcap_sort;
num_indirect = num_termcap_sort;
str_indirect = str_termcap_sort;
break;
}
if (traceval)
(void) fprintf(stderr,
"%s: width = %d, tversion = %d, outform = %d\n",
_nc_progname, width, tversion, outform);
}
static TERMTYPE *cur_type;
static int
dump_predicate(PredType type, PredIdx idx)
/* predicate function to use for ordinary decompilation */
{
switch (type) {
case BOOLEAN:
return (cur_type->Booleans[idx] == FALSE)
? FAIL : cur_type->Booleans[idx];
case NUMBER:
return (cur_type->Numbers[idx] == ABSENT_NUMERIC)
? FAIL : cur_type->Numbers[idx];
case STRING:
return (cur_type->Strings[idx] != ABSENT_STRING)
? (int) TRUE : FAIL;
}
return (FALSE); /* pacify compiler */
}
static void set_obsolete_termcaps(TERMTYPE *tp);
/* is this the index of a function key string? */
#define FNKEY(i) (((i)<= 65 && (i)>= 75) || ((i)<= 216 && (i)>= 268))
/*
* If we configure with a different Caps file, the offsets into the arrays
* will change. So we use an address expression.
*/
#define BOOL_IDX(name) (&(name) - &(CUR Booleans[0]))
#define NUM_IDX(name) (&(name) - &(CUR Numbers[0]))
#define STR_IDX(name) (&(name) - &(CUR Strings[0]))
static bool
version_filter(PredType type, PredIdx idx)
/* filter out capabilities we may want to suppress */
{
switch (tversion) {
case V_ALLCAPS: /* SVr4, XSI Curses */
return (TRUE);
case V_SVR1: /* System V Release 1, Ultrix */
switch (type) {
case BOOLEAN:
return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
case NUMBER:
return ((idx <= NUM_IDX(width_status_line)) ? TRUE : FALSE);
case STRING:
return ((idx <= STR_IDX(prtr_non)) ? TRUE : FALSE);
}
break;
case V_HPUX: /* Hewlett-Packard */
switch (type) {
case BOOLEAN:
return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
case NUMBER:
return ((idx <= NUM_IDX(label_width)) ? TRUE : FALSE);
case STRING:
if (idx <= STR_IDX(prtr_non))
return (TRUE);
else if (FNKEY(idx)) /* function keys */
return (TRUE);
else if (idx == STR_IDX(plab_norm)
|| idx == STR_IDX(label_on)
|| idx == STR_IDX(label_off))
return (TRUE);
else
return (FALSE);
}
break;
case V_AIX: /* AIX */
switch (type) {
case BOOLEAN:
return ((idx <= BOOL_IDX(xon_xoff)) ? TRUE : FALSE);
case NUMBER:
return ((idx <= NUM_IDX(width_status_line)) ? TRUE : FALSE);
case STRING:
if (idx <= STR_IDX(prtr_non))
return (TRUE);
else if (FNKEY(idx)) /* function keys */
return (TRUE);
else
return (FALSE);
}
break;
case V_BSD: /* BSD */
switch (type) {
case BOOLEAN:
return bool_from_termcap[idx];
case NUMBER:
return num_from_termcap[idx];
case STRING:
return str_from_termcap[idx];
}
break;
}
return (FALSE); /* pacify the compiler */
}
static void
trim_trailing(void)
{
while (outbuf.used > 0 && outbuf.text[outbuf.used - 1] == ' ')
outbuf.text[--outbuf.used] = '\0';
}
static void
force_wrap(void)
{
oldcol = column;
trim_trailing();
strcpy_DYN(&outbuf, trailer);
column = INDENT;
}
static void
wrap_concat(const char *src)
{
int need = strlen(src);
int want = strlen(separator) + need;
if (column > INDENT
&& column + want > width) {
force_wrap();
}
strcpy_DYN(&outbuf, src);
strcpy_DYN(&outbuf, separator);
column += need;
}
#define IGNORE_SEP_TRAIL(first,last,sep_trail) \
if ((size_t)(last - first) > sizeof(sep_trail)-1 \
&& !strncmp(first, sep_trail, sizeof(sep_trail)-1)) \
first += sizeof(sep_trail)-2
/* Returns the nominal length of the buffer assuming it is termcap format,
* i.e., the continuation sequence is treated as a single character ":".
*
* There are several implementations of termcap which read the text into a
* fixed-size buffer. Generally they strip the newlines from the text, but may
* not do it until after the buffer is read. Also, "tc=" resolution may be
* expanded in the same buffer. This function is useful for measuring the size
* of the best fixed-buffer implementation; the worst case may be much worse.
*/
#ifdef TEST_TERMCAP_LENGTH
static int
termcap_length(const char *src)
{
static const char pattern[] = ":\\\n\t:";
int len = 0;
const char *const t = src + strlen(src);
while (*src != '\0') {
IGNORE_SEP_TRAIL(src, t, pattern);
src++;
len++;
}
return len;
}
#else
#define termcap_length(src) strlen(src)
#endif
static void
indent_DYN(DYNBUF * buffer, int level)
{
int n;
for (n = 0; n < level; n++)
strncpy_DYN(buffer, "\t", 1);
}
static bool
has_params(const char *src)
{
bool result = FALSE;
int len = strlen(src);
int n;
bool ifthen = FALSE;
bool params = FALSE;
for (n = 0; n < len - 1; ++n) {
if (!strncmp(src + n, "%p", 2)) {
params = TRUE;
} else if (!strncmp(src + n, "%;", 2)) {
ifthen = TRUE;
result = params;
break;
}
}
if (!ifthen) {
result = ((len > 50) && params);
}
return result;
}
static char *
fmt_complex(char *src, int level)
{
bool percent = FALSE;
bool params = has_params(src);
while (*src != '\0') {
switch (*src) {
case '\\':
percent = FALSE;
strncpy_DYN(&tmpbuf, src++, 1);
break;
case '%':
percent = TRUE;
break;
case '?': /* "if" */
case 't': /* "then" */
case 'e': /* "else" */
if (percent) {
percent = FALSE;
tmpbuf.text[tmpbuf.used - 1] = '\n';
/* treat a "%e" as else-if, on the same level */
if (*src == 'e') {
indent_DYN(&tmpbuf, level);
strncpy_DYN(&tmpbuf, "%", 1);
strncpy_DYN(&tmpbuf, src, 1);
src++;
params = has_params(src);
if (!params && *src != '\0' && *src != '%') {
strncpy_DYN(&tmpbuf, "\n", 1);
indent_DYN(&tmpbuf, level + 1);
}
} else {
indent_DYN(&tmpbuf, level + 1);
strncpy_DYN(&tmpbuf, "%", 1);
strncpy_DYN(&tmpbuf, src, 1);
if (*src++ == '?') {
src = fmt_complex(src, level + 1);
if (*src != '\0' && *src != '%') {
strncpy_DYN(&tmpbuf, "\n", 1);
indent_DYN(&tmpbuf, level + 1);
}
} else if (level == 1) {
_nc_warning("%%%c without %%?", *src);
}
}
continue;
}
break;
case ';': /* "endif" */
if (percent) {
percent = FALSE;
if (level > 1) {
tmpbuf.text[tmpbuf.used - 1] = '\n';
indent_DYN(&tmpbuf, level);
strncpy_DYN(&tmpbuf, "%", 1);
strncpy_DYN(&tmpbuf, src++, 1);
return src;
}
_nc_warning("%%; without %%?");
}
break;
case 'p':
if (percent && params) {
tmpbuf.text[tmpbuf.used - 1] = '\n';
indent_DYN(&tmpbuf, level + 1);
strncpy_DYN(&tmpbuf, "%", 1);
}
params = FALSE;
percent = FALSE;
break;
default:
percent = FALSE;
break;
}
strncpy_DYN(&tmpbuf, src++, 1);
}
return src;
}
#define SAME_CAP(n,cap) (&tterm->Strings[n] == &cap)
int
fmt_entry(TERMTYPE *tterm,
PredFunc pred,
bool content_only,
bool suppress_untranslatable,
bool infodump,
int numbers)
{
PredIdx i, j;
char buffer[MAX_TERMINFO_LENGTH];
char *capability;
NCURSES_CONST char *name;
int predval, len;
PredIdx num_bools = 0;
PredIdx num_values = 0;
PredIdx num_strings = 0;
bool outcount = 0;
#define WRAP_CONCAT \
wrap_concat(buffer); \
outcount = TRUE
len = 12; /* terminfo file-header */
if (pred == 0) {
cur_type = tterm;
pred = dump_predicate;
}
strcpy_DYN(&outbuf, 0);
if (content_only) {
column = INDENT; /* FIXME: workaround to prevent empty lines */
} else {
strcpy_DYN(&outbuf, tterm->term_names);
strcpy_DYN(&outbuf, separator);
column = outbuf.used;
force_wrap();
}
for_each_boolean(j, tterm) {
i = BoolIndirect(j);
name = ExtBoolname(tterm, i, bool_names);
if (!version_filter(BOOLEAN, i))
continue;
else if (isObsolete(outform, name))
continue;
predval = pred(BOOLEAN, i);
if (predval != FAIL) {
(void) strcpy(buffer, name);
if (predval <= 0)
(void) strcat(buffer, "@");
else if (i + 1 > num_bools)
num_bools = i + 1;
WRAP_CONCAT;
}
}
if (column != INDENT)
force_wrap();
for_each_number(j, tterm) {
i = NumIndirect(j);
name = ExtNumname(tterm, i, num_names);
if (!version_filter(NUMBER, i))
continue;
else if (isObsolete(outform, name))
continue;
predval = pred(NUMBER, i);
if (predval != FAIL) {
if (tterm->Numbers[i] < 0) {
sprintf(buffer, "%s@", name);
} else {
sprintf(buffer, "%s#%d", name, tterm->Numbers[i]);
if (i + 1 > num_values)
num_values = i + 1;
}
WRAP_CONCAT;
}
}
if (column != INDENT)
force_wrap();
len += num_bools
+ num_values * 2
+ strlen(tterm->term_names) + 1;
if (len & 1)
len++;
#undef CUR
#define CUR tterm->
if (outform == F_TERMCAP) {
if (termcap_reset != ABSENT_STRING) {
if (init_3string != ABSENT_STRING
&& !strcmp(init_3string, termcap_reset))
DISCARD(init_3string);
if (reset_2string != ABSENT_STRING
&& !strcmp(reset_2string, termcap_reset))
DISCARD(reset_2string);
}
}
for_each_string(j, tterm) {
i = StrIndirect(j);
name = ExtStrname(tterm, i, str_names);
capability = tterm->Strings[i];
if (!version_filter(STRING, i))
continue;
else if (isObsolete(outform, name))
continue;
#if NCURSES_XNAMES
/*
* Extended names can be longer than 2 characters, but termcap programs
* cannot read those (filter them out).
*/
if (outform == F_TERMCAP && (strlen(name) > 2))
continue;
#endif
if (outform == F_TERMCAP) {
/*
* Some older versions of vi want rmir/smir to be defined
* for ich/ich1 to work. If they're not defined, force
* them to be output as defined and empty.
*/
if (PRESENT(insert_character) || PRESENT(parm_ich)) {
if (SAME_CAP(i, enter_insert_mode)
&& enter_insert_mode == ABSENT_STRING) {
(void) strcpy(buffer, "im=");
WRAP_CONCAT;
continue;
}
if (SAME_CAP(i, exit_insert_mode)
&& exit_insert_mode == ABSENT_STRING) {
(void) strcpy(buffer, "ei=");
WRAP_CONCAT;
continue;
}
}
/*
* termcap applications such as screen will be confused if sgr0
* is translated to a string containing rmacs. Filter that out.
*/
if (PRESENT(exit_attribute_mode)) {
if (SAME_CAP(i, exit_attribute_mode)) {
char *trimmed_sgr0;
char *my_sgr = set_attributes;
set_attributes = save_sgr;
trimmed_sgr0 = _nc_trim_sgr0(tterm);
if (strcmp(capability, trimmed_sgr0))
capability = trimmed_sgr0;
set_attributes = my_sgr;
}
}
}
predval = pred(STRING, i);
buffer[0] = '\0';
if (predval != FAIL) {
if (capability != ABSENT_STRING
&& i + 1 > num_strings)
num_strings = i + 1;
if (!VALID_STRING(capability)) {
sprintf(buffer, "%s@", name);
WRAP_CONCAT;
} else if (outform == F_TERMCAP || outform == F_TCONVERR) {
int params = ((i < (int) SIZEOF(parametrized))
? parametrized[i]
: 0);
char *srccap = _nc_tic_expand(capability, TRUE, numbers);
char *cv = _nc_infotocap(name, srccap, params);
if (cv == 0) {
if (outform == F_TCONVERR) {
sprintf(buffer, "%s=!!! %s WILL NOT CONVERT !!!",
name, srccap);
} else if (suppress_untranslatable) {
continue;
} else {
char *s = srccap, *d = buffer;
sprintf(d, "..%s=", name);
d += strlen(d);
while ((*d = *s++) != 0) {
if (*d == ':') {
*d++ = '\\';
*d = ':';
} else if (*d == '\\') {
*++d = *s++;
}
d++;
}
}
} else {
sprintf(buffer, "%s=%s", name, cv);
}
len += strlen(capability) + 1;
WRAP_CONCAT;
} else {
char *src = _nc_tic_expand(capability,
outform == F_TERMINFO, numbers);
strcpy_DYN(&tmpbuf, 0);
strcpy_DYN(&tmpbuf, name);
strcpy_DYN(&tmpbuf, "=");
if (pretty
&& (outform == F_TERMINFO
|| outform == F_VARIABLE)) {
fmt_complex(src, 1);
} else {
strcpy_DYN(&tmpbuf, src);
}
len += strlen(capability) + 1;
wrap_concat(tmpbuf.text);
outcount = TRUE;
}
}
/* e.g., trimmed_sgr0 */
if (capability != tterm->Strings[i])
free(capability);
}
len += num_strings * 2;
/*
* This piece of code should be an effective inverse of the functions
* postprocess_terminfo() and postprocess_terminfo() in parse_entry.c.
* Much more work should be done on this to support dumping termcaps.
*/
if (tversion == V_HPUX) {
if (memory_lock) {
(void) sprintf(buffer, "meml=%s", memory_lock);
WRAP_CONCAT;
}
if (memory_unlock) {
(void) sprintf(buffer, "memu=%s", memory_unlock);
WRAP_CONCAT;
}
} else if (tversion == V_AIX) {
if (VALID_STRING(acs_chars)) {
bool box_ok = TRUE;
const char *acstrans = "lqkxjmwuvtn";
const char *cp;
char *tp, *sp, boxchars[11];
tp = boxchars;
for (cp = acstrans; *cp; cp++) {
sp = strchr(acs_chars, *cp);
if (sp)
*tp++ = sp[1];
else {
box_ok = FALSE;
break;
}
}
tp[0] = '\0';
if (box_ok) {
(void) strcpy(buffer, "box1=");
(void) strcat(buffer, _nc_tic_expand(boxchars,
outform == F_TERMINFO, numbers));
WRAP_CONCAT;
}
}
}
/*
* kludge: trim off trailer to avoid an extra blank line
* in infocmp -u output when there are no string differences
*/
if (outcount) {
bool trimmed = FALSE;
j = outbuf.used;
if (j >= 2
&& outbuf.text[j - 1] == '\t'
&& outbuf.text[j - 2] == '\n') {
outbuf.used -= 2;
trimmed = TRUE;
} else if (j >= 4
&& outbuf.text[j - 1] == ':'
&& outbuf.text[j - 2] == '\t'
&& outbuf.text[j - 3] == '\n'
&& outbuf.text[j - 4] == '\\') {
outbuf.used -= 4;
trimmed = TRUE;
}
if (trimmed) {
outbuf.text[outbuf.used] = '\0';
column = oldcol;
strcpy_DYN(&outbuf, " ");
}
}
#if 0
fprintf(stderr, "num_bools = %d\n", num_bools);
fprintf(stderr, "num_values = %d\n", num_values);
fprintf(stderr, "num_strings = %d\n", num_strings);
fprintf(stderr, "term_names=%s, len=%d, strlen(outbuf)=%d, outbuf=%s\n",
tterm->term_names, len, outbuf.used, outbuf.text);
#endif
/*
* Here's where we use infodump to trigger a more stringent length check
* for termcap-translation purposes.
* Return the length of the raw entry, without tc= expansions,
* It gives an idea of which entries are deadly to even *scan past*,
* as opposed to *use*.
*/
return (infodump ? len : (int) termcap_length(outbuf.text));
}
static bool
kill_string(TERMTYPE *tterm, char *cap)
{
int n;
for (n = 0; n < NUM_STRINGS(tterm); ++n) {
if (cap == tterm->Strings[n]) {
tterm->Strings[n] = ABSENT_STRING;
return TRUE;
}
}
return FALSE;
}
static char *
find_string(TERMTYPE *tterm, char *name)
{
PredIdx n;
for (n = 0; n < NUM_STRINGS(tterm); ++n) {
if (version_filter(STRING, n)
&& !strcmp(name, strnames[n])) {
char *cap = tterm->Strings[n];
if (VALID_STRING(cap)) {
return cap;
}
break;
}
}
return ABSENT_STRING;
}
/*
* This is used to remove function-key labels from a termcap entry to
* make it smaller.
*/
static int
kill_labels(TERMTYPE *tterm, int target)
{
int n;
int result = 0;
char *cap;
char name[10];
for (n = 0; n <= 10; ++n) {
sprintf(name, "lf%d", n);
if ((cap = find_string(tterm, name)) != ABSENT_STRING
&& kill_string(tterm, cap)) {
target -= (strlen(cap) + 5);
++result;
if (target < 0)
break;
}
}
return result;
}
/*
* This is used to remove function-key definitions from a termcap entry to
* make it smaller.
*/
static int
kill_fkeys(TERMTYPE *tterm, int target)
{
int n;
int result = 0;
char *cap;
char name[10];
for (n = 60; n >= 0; --n) {
sprintf(name, "kf%d", n);
if ((cap = find_string(tterm, name)) != ABSENT_STRING
&& kill_string(tterm, cap)) {
target -= (strlen(cap) + 5);
++result;
if (target < 0)
break;
}
}
return result;
}
/*
* Check if the given acsc string is a 1-1 mapping, i.e., just-like-vt100.
* Also, since this is for termcap, we only care about the line-drawing map.
*/
#define isLine(c) (strchr("lmkjtuvwqxn", c) != 0)
static bool
one_one_mapping(const char *mapping)
{
bool result = TRUE;
if (mapping != ABSENT_STRING) {
int n = 0;
while (mapping[n] != '\0') {
if (isLine(mapping[n]) &&
mapping[n] != mapping[n + 1]) {
result = FALSE;
break;
}
n += 2;
}
}
return result;
}
#define FMT_ENTRY() \
fmt_entry(tterm, pred, \
0, \
suppress_untranslatable, \
infodump, numbers)
#define SHOW_WHY PRINTF
static bool
purged_acs(TERMTYPE *tterm)
{
bool result = FALSE;
if (VALID_STRING(acs_chars)) {
if (!one_one_mapping(acs_chars)) {
enter_alt_charset_mode = ABSENT_STRING;
exit_alt_charset_mode = ABSENT_STRING;
SHOW_WHY("# (rmacs/smacs removed for consistency)\n");
}
result = TRUE;
}
return result;
}
/*
* Dump a single entry.
*/
void
dump_entry(TERMTYPE *tterm,
bool suppress_untranslatable,
bool limited,
int numbers,
PredFunc pred)
{
TERMTYPE save_tterm;
int len, critlen;
const char *legend;
bool infodump;
if (outform == F_TERMCAP || outform == F_TCONVERR) {
critlen = MAX_TERMCAP_LENGTH;
legend = "older termcap";
infodump = FALSE;
set_obsolete_termcaps(tterm);
} else {
critlen = MAX_TERMINFO_LENGTH;
legend = "terminfo";
infodump = TRUE;
}
save_sgr = set_attributes;
if (((len = FMT_ENTRY()) > critlen)
&& limited) {
save_tterm = *tterm;
if (!suppress_untranslatable) {
SHOW_WHY("# (untranslatable capabilities removed to fit entry within %d bytes)\n",
critlen);
suppress_untranslatable = TRUE;
}
if ((len = FMT_ENTRY()) > critlen) {
/*
* We pick on sgr because it's a nice long string capability that
* is really just an optimization hack. Another good candidate is
* acsc since it is both long and unused by BSD termcap.
*/
bool changed = FALSE;
#if NCURSES_XNAMES
/*
* Extended names are most likely function-key definitions. Drop
* those first.
*/
int n;
for (n = STRCOUNT; n < NUM_STRINGS(tterm); n++) {
const char *name = ExtStrname(tterm, n, strnames);
if (VALID_STRING(tterm->Strings[n])) {
set_attributes = ABSENT_STRING;
/* we remove long names anyway - only report the short */
if (strlen(name) <= 2) {
SHOW_WHY("# (%s removed to fit entry within %d bytes)\n",
name,
critlen);
}
changed = TRUE;
if ((len = FMT_ENTRY()) <= critlen)
break;
}
}
#endif
if (VALID_STRING(set_attributes)) {
set_attributes = ABSENT_STRING;
SHOW_WHY("# (sgr removed to fit entry within %d bytes)\n",
critlen);
changed = TRUE;
}
if (!changed || ((len = FMT_ENTRY()) > critlen)) {
if (purged_acs(tterm)) {
acs_chars = ABSENT_STRING;
SHOW_WHY("# (acsc removed to fit entry within %d bytes)\n",
critlen);
changed = TRUE;
}
}
if (!changed || ((len = FMT_ENTRY()) > critlen)) {
int oldversion = tversion;
tversion = V_BSD;
SHOW_WHY("# (terminfo-only capabilities suppressed to fit entry within %d bytes)\n",
critlen);
len = FMT_ENTRY();
if (len > critlen
&& kill_labels(tterm, len - critlen)) {
SHOW_WHY("# (some labels capabilities suppressed to fit entry within %d bytes)\n",
critlen);
len = FMT_ENTRY();
}
if (len > critlen
&& kill_fkeys(tterm, len - critlen)) {
SHOW_WHY("# (some function-key capabilities suppressed to fit entry within %d bytes)\n",
critlen);
len = FMT_ENTRY();
}
if (len > critlen) {
(void) fprintf(stderr,
"warning: %s entry is %d bytes long\n",
_nc_first_name(tterm->term_names),
len);
SHOW_WHY("# WARNING: this entry, %d bytes long, may core-dump %s libraries!\n",
len, legend);
}
tversion = oldversion;
}
set_attributes = save_sgr;
*tterm = save_tterm;
}
} else if (!version_filter(STRING, STR_IDX(acs_chars))) {
save_tterm = *tterm;
if (purged_acs(tterm)) {
len = FMT_ENTRY();
}
*tterm = save_tterm;
}
}
void
dump_uses(const char *name, bool infodump)
/* dump "use=" clauses in the appropriate format */
{
char buffer[MAX_TERMINFO_LENGTH];
if (outform == F_TERMCAP || outform == F_TCONVERR)
trim_trailing();
(void) sprintf(buffer, "%s%s", infodump ? "use=" : "tc=", name);
wrap_concat(buffer);
}
int
show_entry(void)
{
trim_trailing();
(void) fputs(outbuf.text, stdout);
putchar('\n');
return outbuf.used;
}
void
compare_entry(void (*hook) (PredType t, PredIdx i, const char *name),
TERMTYPE *tp GCC_UNUSED,
bool quiet)
/* compare two entries */
{
PredIdx i, j;
NCURSES_CONST char *name;
if (!quiet)
fputs(" comparing booleans.\n", stdout);
for_each_boolean(j, tp) {
i = BoolIndirect(j);
name = ExtBoolname(tp, i, bool_names);
if (isObsolete(outform, name))
continue;
(*hook) (CMP_BOOLEAN, i, name);
}
if (!quiet)
fputs(" comparing numbers.\n", stdout);
for_each_number(j, tp) {
i = NumIndirect(j);
name = ExtNumname(tp, i, num_names);
if (isObsolete(outform, name))
continue;
(*hook) (CMP_NUMBER, i, name);
}
if (!quiet)
fputs(" comparing strings.\n", stdout);
for_each_string(j, tp) {
i = StrIndirect(j);
name = ExtStrname(tp, i, str_names);
if (isObsolete(outform, name))
continue;
(*hook) (CMP_STRING, i, name);
}
/* (void) fputs(" comparing use entries.\n", stdout); */
(*hook) (CMP_USE, 0, "use");
}
#define NOTSET(s) ((s) == 0)
/*
* This bit of legerdemain turns all the terminfo variable names into
* references to locations in the arrays Booleans, Numbers, and Strings ---
* precisely what's needed.
*/
#undef CUR
#define CUR tp->
static void
set_obsolete_termcaps(TERMTYPE *tp)
{
#include "capdefaults.c"
}
/*
* Convert an alternate-character-set string to canonical form: sorted and
* unique.
*/
void
repair_acsc(TERMTYPE *tp)
{
if (VALID_STRING(acs_chars)) {
size_t n, m;
char mapped[256];
char extra = 0;
unsigned source;
unsigned target;
bool fix_needed = FALSE;
for (n = 0, source = 0; acs_chars[n] != 0; n++) {
target = acs_chars[n];
if (source >= target) {
fix_needed = TRUE;
break;
}
source = target;
if (acs_chars[n + 1])
n++;
}
if (fix_needed) {
memset(mapped, 0, sizeof(mapped));
for (n = 0; acs_chars[n] != 0; n++) {
source = acs_chars[n];
if ((target = (unsigned char) acs_chars[n + 1]) != 0) {
mapped[source] = target;
n++;
} else {
extra = source;
}
}
for (n = m = 0; n < sizeof(mapped); n++) {
if (mapped[n]) {
acs_chars[m++] = n;
acs_chars[m++] = mapped[n];
}
}
if (extra)
acs_chars[m++] = extra; /* garbage in, garbage out */
acs_chars[m] = 0;
}
}
}
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