Always check that mktemp()/mktemp2() succeeds before trying to

[nmh] / sbr / fmt_scan.c

diff --git a/sbr/fmt_scan.c b/sbr/fmt_scan.c
index a7ad1249068b8193150fd08ceb5174b3ceebc740..9b84861cb123b25f5e4cbc71e2e3494caa33f6c1 100644 (file)
--- a/sbr/fmt_scan.c
+++ b/sbr/fmt_scan.c
@@ -175,11 +175,11 @@ cptrimmed(char **dest, char **ep, char *str, unsigned int wid, char fill,
             * widths, so use the column width to bump the end pointer when
             * appropriate.
             */
-           if (char_len > 1 && epmax - *ep >= char_len - w) {
+           if (w >= 0  &&  char_len > 1 && epmax - *ep >= char_len - w) {
                *ep += char_len - w;
            }
 
-           if (cp + w > *ep)
+           if (w >= 0  &&  cp + w > *ep)
                break;
 
            end -= char_len;
@@ -278,7 +278,7 @@ cpstripped (char **dest, char **end, char *max, char *str)
         * by the number of "extra" bytes in this character.  That's the
         * character length (char_len) minus the column width (w).
         */
-       if (char_len > 1  &&  max - *end >= char_len - w) {
+       if (w >= 0  &&  char_len > 1  &&  max - *end >= char_len - w) {
            *end += char_len - w;
        }
 
@@ -467,29 +467,31 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
                       scanl + max - 1);
            break;
        case FT_STRLIT:
-           sp = str;
-           while ((c = *sp++) && cp < ep)
-               *cp++ = c;
+           if (str) {
+               sp = str;
+               while ((c = *sp++) && cp < ep)
+                   *cp++ = c;
+           }
            break;
-       case FT_STRLITZ: {
-           size_t len = strlen (str);
-
-           /* Don't want to emit part of an escape sequence.  So if
-              there isn't enough room in the buffer for the entire
-              string, skip it completely. */
-           if (cp - scanl + len + 1 < max) {
-               for (sp = str; *sp; *cp++ = *sp++) continue;
-
-               /* This string doesn't count against the width.  So
-                  increase ep the same amount as cp, only if the
-                  scan buffer will always be large enough. */
-               if (ep - scanl + len + 1 < max) {
-                   ep += len;
+       case FT_STRLITZ:
+           if (str) {
+               size_t len = strlen (str);
+
+               /* Don't want to emit part of an escape sequence.  So if
+                  there isn't enough room in the buffer for the entire
+                  string, skip it completely. */
+               if (cp - scanl + len + 1 < max) {
+                   for (sp = str; *sp; *cp++ = *sp++) continue;
+
+                   /* This string doesn't count against the width.
+                      So increase ep the same amount as cp, only if the
+                      scan buffer will always be large enough. */
+                   if (ep - scanl + len + 1 < max) {
+                       ep += len;
+                   }
                }
            }
-
            break;
-       }
        case FT_STRFW:
            adios (NULL, "internal error (FT_STRFW)");
 
@@ -518,6 +520,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_S:
            if (!(value = (str && *str))) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -525,6 +530,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_S_NULL:
            if (!(value = (str == NULL || *str == 0))) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -532,6 +540,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_V_EQ:
            if (value != fmt->f_value) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -539,6 +550,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_V_NE:
            if (value == fmt->f_value) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -546,6 +560,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_V_GT:
            if (value <= fmt->f_value) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -553,6 +570,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_MATCH:
            if (!(value = (str && match (str, fmt->f_text)))) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -567,6 +587,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
 
        case FT_IF_AMATCH:
            if (!(value = (str && uprf (str, fmt->f_text)))) {
+               if (callbacks && callbacks->trace_func)
+                   callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                         str, scanl);
                fmt += fmt->f_skip;
                continue;
            }
@@ -597,6 +620,9 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
            break;
 
        case FT_GOTO:
+           if (callbacks && callbacks->trace_func)
+               callbacks->trace_func(callbacks->trace_context, fmt, value,
+                                     str, scanl);
            fmt += fmt->f_skip;
            continue;
 
@@ -1053,7 +1079,7 @@ fmt_scan (struct format *format, char *scanl, size_t max, int width, int *dat,
               there isn't enough room in the buffer for the entire
               string, skip it completely.  Need room for null
               terminator, and maybe trailing newline (added below). */
-           if (cp - scanl + strlen (str) + 1 < max) {
+           if (str && (cp - scanl + strlen (str) + 1 < max)) {
                for (sp = str; *sp; *cp++ = *sp++) continue;
            }
            if (callbacks && callbacks->trace_func)