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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey <dickey@clark.net> 1998 *
31 ****************************************************************************/
33 #include <curses.priv.h>
38 MODULE_ID("$Id: comp_expand.c,v 1.18 2006/06/17 19:37:14 tom Exp $")
41 trailing_spaces(const char *src)
48 /* this deals with differences over whether 0x7f and 0x80..0x9f are controls */
49 #define REALCTL(s) (UChar(*(s)) < 127 && iscntrl(UChar(*(s))))
50 #define REALPRINT(s) (UChar(*(s)) < 127 && isprint(UChar(*(s))))
52 NCURSES_EXPORT(char *)
53 _nc_tic_expand(const char *srcp, bool tic_format, int numbers)
59 const char *str = VALID_STRING(srcp) ? srcp : "";
60 bool islong = (strlen(str) > 3);
61 size_t need = (2 + strlen(str)) * 4;
73 if (buffer == 0 || need > length) {
74 if ((buffer = typeRealloc(char, length = need, buffer)) == 0)
79 while ((ch = UChar(*str)) != 0) {
80 if (ch == '%' && REALPRINT(str + 1)) {
81 buffer[bufp++] = *str++;
83 * Though the character literals are more compact, most
84 * terminal descriptions use numbers and are not easy
85 * to read in character-literal form.
92 && str[2] == S_QUOTE) {
93 sprintf(buffer + bufp, "{%d}", str[1]);
94 bufp += strlen(buffer + bufp);
97 buffer[bufp++] = *str;
101 * If we have a "%{number}", try to translate it into
102 * a "%'char'" form, since that will run a little faster
103 * when we're interpreting it. Also, having one form
104 * for the constant makes it simpler to compare terminal
108 if (str[0] == L_BRACE
109 && isdigit(UChar(str[1]))) {
111 long value = strtol(str + 1, &dst, 0);
115 && value != '\\' /* FIXME */
116 && isprint((int) value)) {
118 buffer[bufp++] = S_QUOTE;
121 buffer[bufp++] = '\\';
123 buffer[bufp++] = S_QUOTE;
126 buffer[bufp++] = *str;
129 buffer[bufp++] = *str;
133 buffer[bufp++] = *str;
136 } else if (ch == 128) {
137 buffer[bufp++] = '\\';
138 buffer[bufp++] = '0';
139 } else if (ch == '\033') {
140 buffer[bufp++] = '\\';
141 buffer[bufp++] = 'E';
142 } else if (ch == '\\' && tic_format && (str == srcp || str[-1] != '^')) {
143 buffer[bufp++] = '\\';
144 buffer[bufp++] = '\\';
145 } else if (ch == ' ' && tic_format && (str == srcp ||
146 trailing_spaces(str))) {
147 buffer[bufp++] = '\\';
148 buffer[bufp++] = 's';
149 } else if ((ch == ',' || ch == ':' || ch == '^') && tic_format) {
150 buffer[bufp++] = '\\';
152 } else if (REALPRINT(str)
155 && !(ch == '!' && !tic_format)
158 #if 0 /* FIXME: this would be more readable (in fact the whole 'islong' logic should be removed) */
159 else if (ch == '\b') {
160 buffer[bufp++] = '\\';
161 buffer[bufp++] = 'b';
162 } else if (ch == '\f') {
163 buffer[bufp++] = '\\';
164 buffer[bufp++] = 'f';
165 } else if (ch == '\t' && islong) {
166 buffer[bufp++] = '\\';
167 buffer[bufp++] = 't';
170 else if (ch == '\r' && (islong || (strlen(srcp) > 2 && str[1] == '\0'))) {
171 buffer[bufp++] = '\\';
172 buffer[bufp++] = 'r';
173 } else if (ch == '\n' && islong) {
174 buffer[bufp++] = '\\';
175 buffer[bufp++] = 'n';
177 #define UnCtl(c) ((c) + '@')
178 else if (REALCTL(str) && ch != '\\'
179 && (!islong || isdigit(UChar(str[1])))) {
180 (void) sprintf(&buffer[bufp], "^%c", UnCtl(ch));
183 (void) sprintf(&buffer[bufp], "\\%03o", ch);