Due to shell portability issues (which is to say shell scripts are not

[uclinux-h8/elf2flt.git] / stubs.c

diff --git a/stubs.c b/stubs.c
index 53a93aa..696ed3b 100644 (file)
--- a/stubs.c
+++ b/stubs.c
@@ -22,6 +22,33 @@ const char *libintl_dgettext(const char *domain, const char *msg)
 }
 #endif /* !HAVE_LIBINTL_DGETTEXT */
 
+#ifndef HAVE_GETLINE
+/* Read a line from IN.  LINE points to a malloc'd buffer that is extended as
+   necessary.  ALLOC points to the allocated length of LINE.  Returns
+   the length of the string read (including any trailing \n) */
+
+ssize_t getline(char **line, size_t *alloc, FILE *in)
+{
+       size_t len = 0;
+
+       if (!*alloc) {
+               *alloc = 200;
+               *line = xmalloc(*alloc);
+       }
+
+       while (1) {
+               if (!fgets(*line + len, *alloc - len, in))
+                       return 0;
+               len += strlen(*line + len);
+               if (len && (*line)[len - 1] == '\n')
+                       return len;
+
+               *alloc *= 2;
+               *line = xrealloc(*line, *alloc);
+       }
+}
+#endif
+
 /* fatal error & exit */
 void fatal(const char *format, ...)
 {
@@ -48,3 +75,59 @@ void fatal_perror(const char *format, ...)
        va_end(args);
        exit(1);
 }
+
+/* open a file or fail */
+FILE *xfopen(const char *path, const char *mode)
+{
+       FILE *ret = fopen(path, mode);
+       if (!ret)
+               fatal_perror("Unable to open '%s'", path);
+       return ret;
+}
+
+/* Append a string SRC to an options array DST */
+void append_option(options_t *dst, const char *src)
+{
+       if (dst->alloc == dst->num) {
+               size_t a = (dst->num + 2) * 2;
+               void *o = xmalloc(sizeof(*dst->options) * a);
+
+               memcpy(o, dst->options, sizeof(*dst->options) * dst->num);
+               free(dst->options);
+               dst->options = o;
+               dst->alloc = a;
+       }
+
+       dst->options[dst->num] = src;
+       dst->num++;
+}
+
+/* Split and append a string SRC to an options array DST */
+void append_option_str(options_t *dst, const char *src, const char *delim)
+{
+       char *tok_src = xstrdup(src);
+       char *tok = strtok(tok_src, delim);
+       while (tok) {
+               append_option(dst, tok);
+               tok = strtok(NULL, delim);
+       }
+       /* don't free tok_src since options_t now points to it */
+}
+
+/* Append an options array SRC to another options array DST */
+void append_options(options_t *dst, const options_t *src)
+{
+       if (dst->alloc < dst->num + src->num) {
+               size_t a = (dst->num + src->num + 2) * 2;
+               void *o = xmalloc(sizeof(*dst->options) * a);
+
+               memcpy(o, dst->options, sizeof(*dst->options) * dst->num);
+               free(dst->options);
+               dst->options = o;
+               dst->alloc = a;
+       }
+
+       memcpy(&dst->options[dst->num], &src->options[0],
+               sizeof(*dst->options) * src->num);
+       dst->num += src->num;
+}