.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_util.3x,v 1.38 2015/03/07 23:33:38 tom Exp $
+.\" $Id: curs_util.3x,v 1.40 2015/03/15 13:58:59 tom Exp $
.TH curs_util 3X ""
.ie \n(.g .ds `` \(lq
.el .ds `` ``
.PP
The \fBkeyname\fR routine returns a character string
corresponding to the key \fIc\fR:
-.RS 3
.bP
Printable characters are displayed as themselves,
e.g., a one-character string containing the key.
to denote an error.
X/Open also lists an "UNKNOWN KEY" return value, which some implementations
return rather than null.
-.RE
.LP
The corresponding \fBkey_name\fR returns a character string corresponding
to the wide-character value \fIw\fR.
and its associated character cells.
The format differs between the wide-character (ncursesw) and
non-wide (ncurses) libraries.
+You can transfer data between the two, however.
.bP
the retrieved window is always created as a top-level window (or pad),
rather than a subwindow.
returns an error if the associated \fBfwrite\fP calls return an error.
.RE
.SH PORTABILITY
+.SS filter
+.PP
+The SVr4 documentation describes the action of \fBfilter\fR only in the vaguest
+terms.
+The description here is adapted from the XSI Curses standard (which
+erroneously fails to describe the disabling of \fBcuu\fR).
+.SS keyname
+.PP
+The \fBkeyname\fP function may return the names of user-defined
+string capabilities which are defined in the terminfo entry via the \fB\-x\fP
+option of \fB@TIC@\fP.
+This implementation automatically assigns at run-time keycodes to
+user-defined strings which begin with "k".
+The keycodes start at KEY_MAX, but are not guaranteed to be
+the same value for different runs because user-defined codes are
+merged from all terminal descriptions which have been loaded.
+The \fBuse_extended_names\fP function controls whether this data is
+loaded when the terminal description is read by the library.
+.SS nofilter/use_tioctl
+.PP
+The \fBnofilter\fP and \fBuse_tioctl\fP routines are specific to ncurses.
+They were not supported on Version 7, BSD or System V implementations.
+It is recommended that any code depending on ncurses extensions
+be conditioned using NCURSES_VERSION.
+.SS putwin/getwin
+.PP
+The \fBputwin\fP and \fBgetwin\fP functions have several issues with
+portability:
+.bP
+The files written and read by these functions
+use an implementation-specific format.
+Although the format is an obvious target for standardization,
+it has been overlooked.
+.IP
+Interestingly enough, according to the copyright dates in Solaris source,
+the functions (along with \fBscr_init\fP, etc.) originated with
+the University of California, Berkeley (in 1982)
+and were later (in 1988) incorporated into SVr4.
+Oddly, there are no such functions in the 4.3BSD curses sources.
+.bP
+Most implementations simply dump the binary \fBWINDOW\fP structure to the file.
+These include SVr4 curses, NetBSD and PDCurses, as well as older ncurses versions.
+This implementation (as well as the X/Open variant of Solaris curses, dated 1995)
+uses textual dumps.
+.IP
+The implementations which use binary dumps use block-I/O
+(the \fBfwrite\fP and \fBfread\fP functions).
+Those that use textual dumps use buffered-I/O.
+A few applications may happen to write extra data in the file using
+these functions.
+Doing that can run into problems mixing block- and buffered-I/O.
+This implementation reduces the problem on writes by flushing the output.
+However, reading from a file written using mixed schemes may not be succesful.
+.SS unctrl/wunctrl
+.PP
The XSI Curses standard, Issue 4 describes these functions.
It states that \fBunctrl\fR and \fBwunctrl\fR will return a null pointer if
unsuccessful, but does not define any error conditions.
This implementation checks for three cases:
-.RS 3
.bP
the parameter is a 7-bit US\-ASCII code.
This is the case that X/Open Curses documented.
.bP
parameter values outside the 0 to 255 range.
\fBunctrl\fP returns a null pointer.
-.RE
-.PP
-The SVr4 documentation describes the action of \fBfilter\fR only in the vaguest
-terms.
-The description here is adapted from the XSI Curses standard (which
-erroneously fails to describe the disabling of \fBcuu\fR).
.PP
The strings returned by \fBunctrl\fR in this implementation are determined
at compile time,
When treating them as \*(``meta\*('' keys
(or if \fBkeyname\fP is called before initializing curses),
this implementation returns strings \*(``M\-^@\*('', \*(``M\-^A\*('', etc.
-.PP
-The \fBkeyname\fP function may return the names of user-defined
-string capabilities which are defined in the terminfo entry via the \fB\-x\fP
-option of \fB@TIC@\fP.
-This implementation automatically assigns at run-time keycodes to
-user-defined strings which begin with "k".
-The keycodes start at KEY_MAX, but are not guaranteed to be
-the same value for different runs because user-defined codes are
-merged from all terminal descriptions which have been loaded.
-The \fBuse_extended_names\fP function controls whether this data is
-loaded when the terminal description is read by the library.
-.PP
-The \fBnofilter\fP and \fBuse_tioctl\fP routines are specific to ncurses.
-They were not supported on Version 7, BSD or System V implementations.
-It is recommended that any code depending on ncurses extensions
-be conditioned using NCURSES_VERSION.
.SH SEE ALSO
\fBlegacy_coding\fR(3X),
\fBcurses\fR(3X),
/****************************************************************************
- * Copyright (c) 1998-2009,2011 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2011,2015 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
#include <curses.priv.h>
+#include <ctype.h>
+
#ifndef CUR
#define CUR SP_TERMTYPE
#endif
-MODULE_ID("$Id: lib_screen.c,v 1.41 2011/10/22 15:03:11 tom Exp $")
+MODULE_ID("$Id: lib_screen.c,v 1.64 2015/03/21 23:59:32 tom Exp $")
#define MAX_SIZE 0x3fff /* 16k is big enough for a window or pad */
+#define MARKER '\\'
+#define GUTTER '|'
+#define L_CURL '{'
+#define R_CURL '}'
+
+#define L_MARK "\\{"
+#define R_MARK "}"
+
+/*
+ * Use 0x8888 as the magic number for new-format files, since it cannot be
+ * mistaken for the _cury/_curx pair of 16-bit numbers which start the old
+ * format. It happens to be unused in the file 5.22 database (2015/03/07).
+ */
+static char my_magic[] =
+{'\210', '\210', '\210', '\210'};
+
+#if NCURSES_EXT_SCREEN_DUMP
+typedef enum {
+ pINT /* int */
+ ,pSHORT /* short */
+ ,pBOOL /* bool */
+ ,pATTR /* attr_t */
+ ,pCHAR /* chtype */
+ ,pSIZE /* NCURSES_SIZE_T */
+#if NCURSES_WIDECHAR
+ ,pCCHAR /* cchar_t */
+#endif
+} PARAM_TYPE;
+
+typedef struct {
+ const char *name;
+ attr_t attr;
+} SCR_ATTRS;
+
+typedef struct {
+ const char *name;
+ PARAM_TYPE type;
+ size_t size;
+ size_t offset;
+} SCR_PARAMS;
+
+#define DATA(name) { #name, A_##name }
+static SCR_ATTRS scr_attrs[] =
+{
+ DATA(NORMAL),
+ DATA(STANDOUT),
+ DATA(UNDERLINE),
+ DATA(REVERSE),
+ DATA(BLINK),
+ DATA(DIM),
+ DATA(BOLD),
+ DATA(ALTCHARSET),
+ DATA(INVIS),
+ DATA(PROTECT),
+ DATA(HORIZONTAL),
+ DATA(LEFT),
+ DATA(LOW),
+ DATA(RIGHT),
+ DATA(TOP),
+ DATA(VERTICAL),
+
+#ifdef A_ITALIC
+ DATA(ITALIC),
+#endif
+};
+#undef DATA
+
+#define sizeof2(type,name) sizeof(((type *)0)->name)
+#define DATA(name, type) { #name, type, sizeof2(WINDOW, name), offsetof(WINDOW, name) }
+
+static SCR_PARAMS scr_params[] =
+{
+ DATA(_cury, pSIZE),
+ DATA(_curx, pSIZE),
+ DATA(_maxy, pSIZE),
+ DATA(_maxx, pSIZE),
+ DATA(_begy, pSIZE),
+ DATA(_begx, pSIZE),
+ DATA(_flags, pSHORT),
+ DATA(_attrs, pATTR),
+ DATA(_bkgd, pCHAR),
+ DATA(_notimeout, pBOOL),
+ DATA(_clear, pBOOL),
+ DATA(_leaveok, pBOOL),
+ DATA(_scroll, pBOOL),
+ DATA(_idlok, pBOOL),
+ DATA(_idcok, pBOOL),
+ DATA(_immed, pBOOL),
+ DATA(_sync, pBOOL),
+ DATA(_use_keypad, pBOOL),
+ DATA(_delay, pINT),
+ DATA(_regtop, pSIZE),
+ DATA(_regbottom, pSIZE),
+ DATA(_pad._pad_y, pSIZE),
+ DATA(_pad._pad_x, pSIZE),
+ DATA(_pad._pad_top, pSIZE),
+ DATA(_pad._pad_left, pSIZE),
+ DATA(_pad._pad_bottom, pSIZE),
+ DATA(_pad._pad_right, pSIZE),
+ DATA(_yoffset, pSIZE),
+#if NCURSES_WIDECHAR
+ DATA(_bkgrnd, pCCHAR),
+#if NCURSES_EXT_COLORS
+ DATA(_color, pINT),
+#endif
+#endif
+};
+#undef DATA
+
+static const NCURSES_CH_T blank = NewChar(BLANK_TEXT);
+
+/*
+ * Allocate and read a line of text. Caller must free it.
+ */
+static char *
+read_txt(FILE *fp)
+{
+ size_t limit = 1024;
+ size_t used = 0;
+ char *result = malloc(limit);
+ char *buffer;
+
+ if (result != 0) {
+ int ch = 0;
+
+ clearerr(fp);
+ result[used] = '\0';
+ do {
+ if (used + 2 >= limit) {
+ limit += 1024;
+ buffer = realloc(result, limit);
+ if (buffer == 0) {
+ free(result);
+ result = 0;
+ break;
+ }
+ }
+ ch = fgetc(fp);
+ if (ch == EOF)
+ break;
+ result[used++] = (char) ch;
+ result[used] = '\0';
+ } while (ch != '\n');
+
+ if (ch == '\n') {
+ result[--used] = '\0';
+ T(("READ:%s", result));
+ } else if (used == 0) {
+ free(result);
+ result = 0;
+ }
+ }
+ return result;
+}
+
+static char *
+decode_attr(char *source, attr_t *target, int *color)
+{
+ bool found = FALSE;
+
+ T(("decode_attr '%s'", source));
+
+ while (*source) {
+ if (source[0] == MARKER && source[1] == L_CURL) {
+ source += 2;
+ found = TRUE;
+ } else if (source[0] == R_CURL) {
+ source++;
+ found = FALSE;
+ } else if (found) {
+ size_t n;
+ char *next = source;
+
+ if (source[0] == GUTTER) {
+ ++next;
+ } else if (*next == 'C') {
+ int value = 0;
+ next++;
+ while (isdigit(UChar(*next))) {
+ value = value * 10 + (*next++ - '0');
+ }
+ *target &= ~A_COLOR;
+ if (value > 256) {
+ *target |= COLOR_PAIR(255);
+ } else {
+ *target |= COLOR_PAIR(value);
+ }
+ *color = value;
+ } else {
+ while (isalnum(UChar(*next))) {
+ ++next;
+ }
+ for (n = 0; n < SIZEOF(scr_attrs); ++n) {
+ if ((size_t) (next - source) == strlen(scr_attrs[n].name)) {
+ if (scr_attrs[n].attr) {
+ *target |= scr_attrs[n].attr;
+ } else {
+ *target = A_NORMAL;
+ }
+ break;
+ }
+ }
+ }
+ source = next;
+ } else {
+ break;
+ }
+ }
+ return source;
+}
+
+static char *
+decode_char(char *source, int *target)
+{
+ int limit = 0;
+ int base = 16;
+ const char digits[] = "0123456789abcdef";
+
+ T(("decode_char '%s'", source));
+ *target = ' ';
+ switch (*source) {
+ case '\\':
+ switch (*++source) {
+ case '\\':
+ *target = '\\';
+ ++source;
+ break;
+ case 's':
+ *target = ' ';
+ ++source;
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ base = 8;
+ limit = 3;
+ break;
+ case 'u':
+ limit = 4;
+ ++source;
+ break;
+ case 'U':
+ limit = 8;
+ ++source;
+ break;
+ }
+ if (limit) {
+ *target = 0;
+ while (limit-- > 0) {
+ char *find = strchr(digits, *source++);
+ int ch = (find != 0) ? (int) (find - digits) : -1;
+ *target *= base;
+ if (ch >= 0 && ch < base) {
+ *target += ch;
+ }
+ }
+ }
+ break;
+ default:
+ *target = *source++;
+ break;
+ }
+ return source;
+}
+
+static char *
+decode_chtype(char *source, chtype fillin, chtype *target)
+{
+ attr_t attr = ChAttrOf(fillin);
+ int color = PAIR_NUMBER(attr);
+ int value;
+
+ T(("decode_chtype '%s'", source));
+ source = decode_attr(source, &attr, &color);
+ source = decode_char(source, &value);
+ *target = ChCharOf(value) | attr | COLOR_PAIR(color);
+ return source;
+}
+
+#if NCURSES_WIDECHAR
+static char *
+decode_cchar(char *source, cchar_t *fillin, cchar_t *target)
+{
+ int color;
+ attr_t attr = fillin->attr;
+ wchar_t chars[CCHARW_MAX];
+
+ T(("decode_cchar '%s'", source));
+ *target = blank;
+#if NCURSES_EXT_COLORS
+ color = fillin->ext_color;
+#else
+ color = (int) PAIR_NUMBER(attr);
+#endif
+ source = decode_attr(source, &attr, &color);
+ memset(chars, 0, sizeof(chars));
+ source = decode_char(source, &chars[0]);
+ /* FIXME - handle combining characters at this point */
+ setcchar(target, chars, attr, (short) color, NULL);
+ return source;
+}
+#endif
+
+static int
+read_win(WINDOW *win, FILE *fp)
+{
+ int code = ERR;
+ char *txt;
+ char *name;
+ char *value;
+ size_t n;
+ int color;
+#if NCURSES_WIDECHAR
+ NCURSES_CH_T prior;
+#endif
+ chtype prior2;
+
+ memset(win, 0, sizeof(WINDOW));
+ for (;;) {
+ txt = read_txt(fp);
+ if (txt == 0)
+ break;
+ if (!strcmp(txt, "rows:")) {
+ free(txt);
+ code = OK;
+ break;
+ }
+ if ((value = strchr(txt, '=')) == 0) {
+ free(txt);
+ continue;
+ }
+ *value++ = '\0';
+ name = !strcmp(txt, "flag") ? value : txt;
+ for (n = 0; n < SIZEOF(scr_params); ++n) {
+ if (!strcmp(name, scr_params[n].name)) {
+ void *data = (void *) ((char *) win + scr_params[n].offset);
+
+ switch (scr_params[n].type) {
+ case pATTR:
+ (void) decode_attr(value, data, &color);
+ break;
+ case pBOOL:
+ *(bool *) data = TRUE;
+ break;
+ case pCHAR:
+ prior2 = ' ';
+ decode_chtype(value, prior2, data);
+ break;
+ case pINT:
+ *(int *) data = atoi(value);
+ break;
+ case pSHORT:
+ *(short *) data = (short) atoi(value);
+ break;
+ case pSIZE:
+ *(NCURSES_SIZE_T *) data = (NCURSES_SIZE_T) atoi(value);
+ break;
+#if NCURSES_WIDECHAR
+ case pCCHAR:
+ prior = blank;
+ decode_cchar(value, &prior, data);
+ break;
+#endif
+ }
+ break;
+ }
+ }
+ free(txt);
+ }
+ return code;
+}
+
+static int
+read_row(char *source, NCURSES_CH_T * prior, NCURSES_CH_T * target, int length)
+{
+ while (*source != '\0' && length > 0) {
+#if NCURSES_WIDECHAR
+ source = decode_cchar(source, prior, target);
+#else
+ source = decode_chtype(source, *prior, target);
+#endif
+ *prior = *target;
+ ++target;
+ --length;
+ }
+ while (length-- > 0) {
+ *target++ = blank;
+ }
+ /* FIXME - see what error conditions should apply if I need to return ERR */
+ return 0;
+}
+#endif /* NCURSES_EXT_SCREEN_DUMP */
+
+/*
+ * Originally, getwin/putwin used fread/fwrite, because they used binary data.
+ * The new format uses printable ASCII, which does not have as predictable
+ * sizes. Consequently, we use buffered I/O, e.g., fgetc/fprintf, which need
+ * special handling if we want to read screen dumps from an older library.
+ */
+static int
+read_block(void *target, size_t length, FILE *fp)
+{
+ int result = 0;
+ char *buffer = target;
+
+ clearerr(fp);
+ while (length-- != 0) {
+ int ch = fgetc(fp);
+ if (ch == EOF) {
+ result = -1;
+ break;
+ }
+ *buffer++ = (char) ch;
+ }
+ return result;
+}
+
NCURSES_EXPORT(WINDOW *)
NCURSES_SP_NAME(getwin) (NCURSES_SP_DCLx FILE *filep)
{
WINDOW tmp, *nwin;
int n;
+ bool old_format = FALSE;
T((T_CALLED("getwin(%p)"), (void *) filep));
if (filep == 0) {
returnWin(0);
}
- clearerr(filep);
- if (fread(&tmp, (size_t) 1, sizeof(WINDOW), filep) < sizeof(WINDOW)
- || ferror(filep)
- || tmp._maxy == 0
- || tmp._maxy > MAX_SIZE
- || tmp._maxx == 0
- || tmp._maxx > MAX_SIZE) {
+
+ /*
+ * Read the first 4 bytes to determine first if this is an old-format
+ * screen-dump, or new-format.
+ */
+ if (read_block(&tmp, 4, filep) < 0) {
+ returnWin(0);
+ }
+ /*
+ * If this is a new-format file, and we do not support it, give up.
+ */
+ if (!memcmp(&tmp, my_magic, 4)) {
+#if NCURSES_EXT_SCREEN_DUMP
+ if (read_win(&tmp, filep) < 0)
+#endif
+ returnWin(0);
+ } else if (read_block(((char *) &tmp) + 4, sizeof(WINDOW) - 4, filep) < 0) {
+ returnWin(0);
+ } else {
+ old_format = TRUE;
+ }
+
+ /*
+ * Check the window-size:
+ */
+ if (tmp._maxy == 0 ||
+ tmp._maxy > MAX_SIZE ||
+ tmp._maxx == 0 ||
+ tmp._maxx > MAX_SIZE) {
returnWin(0);
}
if (tmp._flags & _ISPAD)
nwin->_pad = tmp._pad;
- for (n = 0; n <= nwin->_maxy; n++) {
- clearerr(filep);
- if (fread(nwin->_line[n].text, (size_t) 1, linesize, filep) < linesize
- || ferror(filep)) {
+ if (old_format) {
+ T(("reading old-format screen dump"));
+ for (n = 0; n <= nwin->_maxy; n++) {
+ if (read_block(nwin->_line[n].text, linesize, filep) < 0) {
+ delwin(nwin);
+ returnWin(0);
+ }
+ }
+ }
+#if NCURSES_EXT_SCREEN_DUMP
+ else {
+ char *txt;
+ bool success = TRUE;
+ NCURSES_CH_T prior = blank;
+
+ T(("reading new-format screen dump"));
+ for (n = 0; n <= nwin->_maxy; n++) {
+ long row;
+ char *next;
+
+ if ((txt = read_txt(filep)) == 0) {
+ T(("...failed to read string for row %d", n + 1));
+ success = FALSE;
+ break;
+ }
+ row = strtol(txt, &next, 10);
+ if (row != (n + 1) || *next != ':') {
+ T(("...failed to read row-number %d", n + 1));
+ success = FALSE;
+ break;
+ }
+
+ if (read_row(++next, &prior, nwin->_line[n].text, tmp._maxx
+ + 1) < 0) {
+ T(("...failed to read cells for row %d", n + 1));
+ success = FALSE;
+ break;
+ }
+ free(txt);
+ txt = 0;
+ }
+
+ if (!success) {
+ free(txt);
delwin(nwin);
returnWin(0);
}
}
+#endif
touchwin(nwin);
}
returnWin(nwin);
}
#endif
+#if NCURSES_EXT_SCREEN_DUMP
+static void
+encode_attr(char *target, attr_t source, attr_t prior)
+{
+ *target = '\0';
+ if (source != prior) {
+ size_t n;
+ bool first = TRUE;
+
+ strcpy(target, L_MARK);
+ target += strlen(target);
+
+ for (n = 0; n < SIZEOF(scr_attrs); ++n) {
+ if ((source & scr_attrs[n].attr) != 0 ||
+ ((source & ALL_BUT_COLOR) == 0 &&
+ (scr_attrs[n].attr == A_NORMAL))) {
+ if (first) {
+ first = FALSE;
+ } else {
+ *target++ = '|';
+ }
+ strcpy(target, scr_attrs[n].name);
+ target += strlen(target);
+ }
+ }
+ if ((source & A_COLOR) != (prior & A_COLOR)) {
+ if (!first)
+ *target++ = '|';
+ sprintf(target, "C%d", PAIR_NUMBER(source));
+ target += strlen(target);
+ }
+
+ strcpy(target, R_MARK);
+ }
+}
+
+static void
+encode_cell(char *target, CARG_CH_T source, CARG_CH_T previous)
+{
+#if NCURSES_WIDECHAR
+ size_t n;
+
+ *target = '\0';
+ if (previous->attr != source->attr) {
+ encode_attr(target, source->attr, previous->attr);
+ }
+ target += strlen(target);
+#if NCURSES_EXT_COLORS
+ if (previous->ext_color != source->ext_color) {
+ sprintf(target, "%sC%d%s", L_MARK, source->ext_color, R_MARK);
+ }
+#endif
+ for (n = 0; n < SIZEOF(source->chars); ++n) {
+ if (source->chars[n] == 0)
+ continue;
+ if (source->chars[n] > 0xffff) {
+ sprintf(target, "\\U%08x", source->chars[n]);
+ } else if (source->chars[n] > 0xff) {
+ sprintf(target, "\\u%04x", source->chars[n]);
+ } else if (source->chars[n] < 32 || source->chars[n] >= 127) {
+ sprintf(target, "\\%03o", source->chars[n] & 0xff);
+ } else {
+ switch (source->chars[n]) {
+ case ' ':
+ strcpy(target, "\\s");
+ break;
+ case '\\':
+ strcpy(target, "\\\\");
+ break;
+ default:
+ sprintf(target, "%c", source->chars[n]);
+ break;
+ }
+ }
+ target += strlen(target);
+ }
+#else
+ chtype ch = CharOfD(source);
+
+ *target = '\0';
+ if (AttrOfD(previous) != AttrOfD(source)) {
+ encode_attr(target, AttrOfD(source), AttrOfD(previous));
+ }
+ target += strlen(target);
+ if (ch < 32 || ch >= 127) {
+ sprintf(target, "\\%03o", ch);
+ } else {
+ switch (ch) {
+ case ' ':
+ strcpy(target, "\\s");
+ break;
+ case '\\':
+ strcpy(target, "\\\\");
+ break;
+ default:
+ sprintf(target, "%c", ch);
+ break;
+ }
+ }
+ target += strlen(target);
+#endif
+}
+#endif
+
NCURSES_EXPORT(int)
putwin(WINDOW *win, FILE *filep)
{
int code = ERR;
- int n;
+ int y;
T((T_CALLED("putwin(%p,%p)"), (void *) win, (void *) filep));
+#if NCURSES_EXT_SCREEN_DUMP
+ if (win != 0) {
+ const char *version = curses_version();
+ char buffer[1024];
+ NCURSES_CH_T last_cell;
+
+ memset(&last_cell, 0, sizeof(last_cell));
+
+ clearerr(filep);
+
+ /*
+ * Our magic number is technically nonprinting, but aside from that,
+ * all of the file is printable ASCII.
+ */
+#define PUTS(s) if (fputs(s, filep) == EOF || ferror(filep)) returnCode(code)
+ PUTS(my_magic);
+ PUTS(version);
+ PUTS("\n");
+ for (y = 0; y < (int) SIZEOF(scr_params); ++y) {
+ const char *name = scr_params[y].name;
+ const char *data = (char *) win + scr_params[y].offset;
+ const void *dp = (const void *) data;
+
+ *buffer = '\0';
+ if (!strncmp(name, "_pad.", 5) && !(win->_flags & _ISPAD)) {
+ continue;
+ }
+ switch (scr_params[y].type) {
+ case pATTR:
+ encode_attr(buffer, (*(const attr_t *) dp) & ~A_CHARTEXT, A_NORMAL);
+ break;
+ case pBOOL:
+ if (!(*(const bool *) data)) {
+ continue;
+ }
+ strcpy(buffer, name);
+ name = "flag";
+ break;
+ case pCHAR:
+ encode_attr(buffer, *(const attr_t *) dp, A_NORMAL);
+ break;
+ case pINT:
+ if (!(*(const int *) dp))
+ continue;
+ sprintf(buffer, "%d", *(const int *) dp);
+ break;
+ case pSHORT:
+ if (!(*(const short *) dp))
+ continue;
+ sprintf(buffer, "%d", *(const short *) dp);
+ break;
+ case pSIZE:
+ if (!(*(const NCURSES_SIZE_T *) dp))
+ continue;
+ sprintf(buffer, "%d", *(const NCURSES_SIZE_T *) dp);
+ break;
+#if NCURSES_WIDECHAR
+ case pCCHAR:
+ encode_cell(buffer, (CARG_CH_T) dp, CHREF(last_cell));
+ break;
+#endif
+ }
+ /*
+ * Only write non-default data.
+ */
+ if (*buffer != '\0') {
+ if (fprintf(filep, "%s=%s\n", name, buffer) <= 0
+ || ferror(filep))
+ returnCode(code);
+ }
+ }
+ /* Write row-data */
+ fprintf(filep, "rows:\n");
+ for (y = 0; y <= win->_maxy; y++) {
+ NCURSES_CH_T *data = win->_line[y].text;
+ int x;
+ if (fprintf(filep, "%d:", y + 1) <= 0
+ || ferror(filep))
+ returnCode(code);
+ for (x = 0; x <= win->_maxx; x++) {
+ encode_cell(buffer, CHREF(data[x]), CHREF(last_cell));
+ last_cell = data[x];
+ PUTS(buffer);
+ }
+ PUTS("\n");
+ }
+ }
+#else
+ /*
+ * This is the original putwin():
+ * A straight binary dump is simple, but its format can depend on whether
+ * ncurses is compiled with wide-character support, and also may depend
+ * on the version of ncurses, e.g., if the WINDOW structure is extended.
+ */
if (win != 0) {
size_t len = (size_t) (win->_maxx + 1);
|| ferror(filep))
returnCode(code);
- for (n = 0; n <= win->_maxy; n++) {
- if (fwrite(win->_line[n].text,
+ for (y = 0; y <= win->_maxy; y++) {
+ if (fwrite(win->_line[y].text,
sizeof(NCURSES_CH_T), len, filep) != len
|| ferror(filep)) {
returnCode(code);
}
code = OK;
}
+#endif
returnCode(code);
}
NCURSES_SP_NAME(scr_restore) (NCURSES_SP_DCLx const char *file)
{
FILE *fp = 0;
+ int code = ERR;
T((T_CALLED("scr_restore(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
- if (_nc_access(file, R_OK) < 0
- || (fp = fopen(file, "rb")) == 0) {
- returnCode(ERR);
- } else {
+ if (_nc_access(file, R_OK) >= 0
+ && (fp = fopen(file, "rb")) != 0) {
delwin(NewScreen(SP_PARM));
NewScreen(SP_PARM) = getwin(fp);
#if !USE_REENTRANT
newscr = NewScreen(SP_PARM);
#endif
(void) fclose(fp);
- returnCode(OK);
+ if (NewScreen(SP_PARM) != 0) {
+ code = OK;
+ }
}
+ returnCode(code);
}
#if NCURSES_SP_FUNCS
curscr = CurScreen(SP_PARM);
#endif
(void) fclose(fp);
- code = OK;
+ if (CurScreen(SP_PARM) != 0) {
+ code = OK;
+ }
}
}
returnCode(code);
NCURSES_EXPORT(int)
NCURSES_SP_NAME(scr_set) (NCURSES_SP_DCLx const char *file)
{
+ int code = ERR;
+
T((T_CALLED("scr_set(%p,%s)"), (void *) SP_PARM, _nc_visbuf(file)));
- if (NCURSES_SP_NAME(scr_init) (NCURSES_SP_ARGx file) == ERR) {
- returnCode(ERR);
- } else {
+ if (NCURSES_SP_NAME(scr_init) (NCURSES_SP_ARGx file) == OK) {
delwin(NewScreen(SP_PARM));
NewScreen(SP_PARM) = dupwin(curscr);
#if !USE_REENTRANT
newscr = NewScreen(SP_PARM);
#endif
- returnCode(OK);
+ if (NewScreen(SP_PARM) != 0) {
+ code = OK;
+ }
}
+ returnCode(code);
}
#if NCURSES_SP_FUNCS
projects / ncurses.git / commitdiff