mirror of
https://git.zap.org.au/git/trader.git
synced 2025-01-03 14:57:41 -05:00
Add vprepstr() with a va_list argument: for the future txdlgbox()
This commit is contained in:
John Zaitseff
parent
2612eddf3d
commit
4e7699f192
157
src/intf.c
157
src/intf.c
@ -555,6 +555,27 @@ void txresize (void)
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#endif // HANDLE_RESIZE_EVENTS
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/***********************************************************************/
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// prepstr: Prepare a string for printing to screen
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int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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chtype attr_alt1, chtype attr_alt2, int maxlines, int maxwidth,
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int *restrict widthbuf, int widthbufsize,
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const char *restrict format, ...)
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{
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va_list args;
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int lines;
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va_start(args, format);
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lines = vprepstr(chbuf, chbufsize, attr_norm, attr_alt1, attr_alt2,
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maxlines, maxwidth, widthbuf, widthbufsize, format,
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args);
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va_end(args);
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return lines;
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}
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/***********************************************************************/
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// prepstr_addch: Add a character to the prepstr buffer
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@ -641,17 +662,16 @@ int prepstr_addch (chtype *restrict *restrict chbuf, int *restrict chbufsize,
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/***********************************************************************/
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// prepstr: Prepare a string for printing to screen
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// vprepstr: Prepare a string for printing to screen
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int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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chtype attr_alt1, chtype attr_alt2, int maxlines, int maxwidth,
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int *restrict widthbuf, int widthbufsize,
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const char *restrict format, ...)
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int vprepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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chtype attr_alt1, chtype attr_alt2, int maxlines, int maxwidth,
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int *restrict widthbuf, int widthbufsize,
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const char *restrict format, va_list args)
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{
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struct argument format_arg[MAXFMTARGS];
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int num_format_args, arg_num;
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const char *orig_format;
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va_list args;
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int line, width;
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chtype *lastspc;
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int widthspc;
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@ -676,14 +696,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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memset(format_arg, 0, sizeof(format_arg));
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num_format_args = 0;
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arg_num = 0;
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va_start(args, format);
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while (*format != '\0') {
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switch (*format++) {
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case '^':
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// Switch to a different character rendition
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if (*format == '\0') {
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goto error_inval;
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errno = EINVAL;
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return -1;
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} else {
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format++;
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}
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@ -692,7 +712,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case '%':
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// Process a conversion specifier
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if (*format == '\0') {
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goto error_inval;
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errno = EINVAL;
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return -1;
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} else if (*format == '%') {
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format++;
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} else {
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@ -707,8 +728,10 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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switch (c) {
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case '0':
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// Zero flag, or part of numeric count
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if (count == 0)
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goto error_inval;
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if (count == 0) {
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errno = EINVAL;
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return -1;
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}
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count *= 10;
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break;
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@ -728,12 +751,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case '$':
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// Fixed-position argument
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if (flag_posn || count == 0)
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goto error_inval;
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if (flag_posn || count == 0) {
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errno = EINVAL;
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return -1;
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}
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if (count > MAXFMTARGS) {
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errno = E2BIG;
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goto error;
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return -1;
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}
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flag_posn = true;
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@ -747,8 +772,10 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case 'l':
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// Long length modifier
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if (flag_long)
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goto error_inval;
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if (flag_long) {
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errno = EINVAL;
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return -1;
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}
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flag_long = true;
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break;
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@ -760,29 +787,34 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case 'N':
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// Insert a monetary amount (double)
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if (flag_long)
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goto error_inval;
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if (flag_long) {
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errno = EINVAL;
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return -1;
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}
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arg_type = TYPE_DOUBLE;
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goto handlefmt;
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case 's':
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// Insert a string (const char *)
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if (flag_long)
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goto error_inval;
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if (flag_long) {
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errno = EINVAL;
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return -1;
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}
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arg_type = TYPE_STRING;
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handlefmt:
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if (arg_num >= MAXFMTARGS) {
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errno = E2BIG;
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goto error;
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return -1;
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}
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if (format_arg[arg_num].a_type == TYPE_NONE) {
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format_arg[arg_num].a_type = arg_type;
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} else if (format_arg[arg_num].a_type != arg_type) {
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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arg_num++;
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@ -792,11 +824,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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break;
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default:
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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}
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if (inspec)
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goto error_inval;
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if (inspec) {
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errno = EINVAL;
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return -1;
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}
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}
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break;
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@ -828,7 +863,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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/* Cannot allow unused arguments, as we have no way of
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knowing how much space they take (cf. int vs. long long
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int). */
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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}
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@ -848,7 +884,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case '^':
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// Switch to a different character rendition
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if (*++format == '\0') {
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goto error_inval;
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errno = EINVAL;
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return -1;
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} else {
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switch (*format) {
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case '^':
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@ -856,7 +893,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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maxwidth, &line, &width, &lastspc,
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&widthspc, widthbuf, widthbufsize,
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&format) < 0) {
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goto error;
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return -1;
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}
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break;
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@ -877,7 +914,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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break;
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default:
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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}
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break;
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@ -885,12 +923,13 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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case '%':
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// Process a conversion specifier
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if (*++format == '\0') {
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goto error_inval;
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errno = EINVAL;
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return -1;
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} else if (*format == '%') {
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if (prepstr_addch(&chbuf, &chbufsize, curattr, maxlines,
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maxwidth, &line, &width, &lastspc, &widthspc,
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widthbuf, widthbufsize, &format) < 0) {
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goto error;
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return -1;
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}
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} else {
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bool inspec = true;
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@ -912,7 +951,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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if (count == 0) {
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// Zero flag is not supported
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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count *= 10;
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@ -935,13 +975,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Fixed-position argument
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if (flag_posn || count == 0) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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if (count > MAXFMTARGS) {
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free(buf);
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errno = E2BIG;
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goto error;
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return -1;
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}
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flag_posn = true;
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@ -953,7 +994,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Use locale-specific thousands separator
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if (flag_thou) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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flag_thou = true;
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@ -963,7 +1005,8 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Long length modifier
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if (flag_long) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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flag_long = true;
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@ -973,13 +1016,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Insert an integer (int or long int) into the output
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if (count != 0) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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if (arg_num >= MAXFMTARGS) {
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free(buf);
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errno = E2BIG;
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goto error;
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return -1;
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}
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if (flag_long) {
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@ -988,7 +1032,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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saved_errno = errno;
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free(buf);
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errno = saved_errno;
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goto error;
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return -1;
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}
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} else {
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if (snprintf(buf, BUFSIZE, flag_thou ? "%'d" : "%d",
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@ -996,7 +1040,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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saved_errno = errno;
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free(buf);
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errno = saved_errno;
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goto error;
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return -1;
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}
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}
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@ -1007,13 +1051,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Insert a monetary amount (double) into the output
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if (count != 0 || flag_thou || flag_long) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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if (arg_num >= MAXFMTARGS) {
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free(buf);
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errno = E2BIG;
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goto error;
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return -1;
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}
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if (l_strfmon(buf, BUFSIZE, "%n",
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@ -1021,7 +1066,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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saved_errno = errno;
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free(buf);
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errno = saved_errno;
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goto error;
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return -1;
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}
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str = buf;
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@ -1031,13 +1076,14 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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// Insert a string (const char *) into the output
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if (count != 0 || flag_thou || flag_long) {
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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if (arg_num >= MAXFMTARGS) {
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free(buf);
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errno = E2BIG;
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goto error;
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return -1;
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}
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str = format_arg[arg_num].a.a_string;
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@ -1056,7 +1102,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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saved_errno = errno;
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free(buf);
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errno = saved_errno;
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goto error;
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return -1;
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}
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}
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@ -1066,12 +1112,15 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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default:
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free(buf);
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goto error_inval;
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errno = EINVAL;
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return -1;
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}
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}
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free(buf);
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if (inspec)
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goto error_inval;
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if (inspec) {
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errno = EINVAL;
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return -1;
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}
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}
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break;
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@ -1080,7 +1129,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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if (prepstr_addch(&chbuf, &chbufsize, curattr, maxlines, maxwidth,
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&line, &width, &lastspc, &widthspc, widthbuf,
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widthbufsize, &format) < 0) {
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goto error;
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return -1;
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}
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}
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}
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@ -1093,15 +1142,7 @@ int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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line = maxlines - 1;
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}
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va_end(args);
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return line + 1;
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error_inval:
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errno = EINVAL;
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error:
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va_end(args);
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return -1;
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}
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26
src/intf.h
26
src/intf.h
@ -323,6 +323,32 @@ extern int prepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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const char *restrict format, ...);
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/*
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Function: vprepstr - Prepare a string for printing to screen
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Parameters: chbuf - Pointer to chtype buffer in which to store string
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chbufsize - Number of chtype elements in chbuf
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attr_norm - Normal character rendition to use
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attr_alt1 - First alternate character rendition to use
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attr_alt2 - Second alternate character rendition to use
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maxlines - Maximum number of screen lines to use
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maxwidth - Maximum width of each line, in chars
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widthbuf - Pointer to buffer to store widths of each line
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widthbufsize - Number of int elements in widthbuf
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format - Format string as described for prepstr()
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args - Variable argument list
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Returns: int - Number of lines actually used, or -1 on error
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This function is exactly the same as prepstr(), except that it is
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called with a va_list parameter args instead of a variable number of
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arguments. Note that va_end() is NOT called on args, and that args is
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undefined after this function.
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*/
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extern int vprepstr (chtype *restrict chbuf, int chbufsize, chtype attr_norm,
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chtype attr_alt1, chtype attr_alt2, int maxlines,
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int maxwidth, int *restrict widthbuf, int widthbufsize,
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const char *restrict format, va_list args);
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/*
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Function: pr_left - Print strings in chbuf left-aligned
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Parameters: win - Window to use (should be curwin)
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