Discard too long lines in dictionary file (#14)

* Discard too long lines in dictionary file

* Discard too long lines in dictionary file: add warning and test

hyphen.c

@@ -439,10 +439,24 @@ for (k = 0; k < 2; k++) {
 
   if (k == 0 || nextlevel) {
     while (fgets(buf, sizeof(buf), f) != NULL) {
+      
+      /* discard lines that don't fit in buffer */
+      if (!feof(f) && strchr(buf, '\n') == NULL) {
+        int c;
+        while ((c = fgetc(f)) != '\n' && c != EOF);
+        /* issue warning if not a comment */
+        if (buf[0] != '%') {
+          fprintf(stderr, "Warning: skipping too long pattern (more than %lu chars)\n", sizeof(buf));
+        }
+        continue;
+      }
+      
       if (strncmp(buf, "NEXTLEVEL", 9) == 0) {
         nextlevel = 1;
         break;
-      } else if (buf[0] != '%') hnj_hyphen_load_line(buf, dict[k], hashtab);
+      } else if (buf[0] != '%') {
+        hnj_hyphen_load_line(buf, dict[k], hashtab);
+      }
     }
   } else if (k == 1) {
     /* default first level: hyphen and ASCII apostrophe */

tests/Makefile.am

@@ -11,6 +11,7 @@ alt4.test \
 alt5.test \
 alt6.test \
 alt7.test \
+longlines.test \
 compound.test \
 compound2.test \
 compound3.test \
@@ -50,6 +51,9 @@ alt6.word \
 alt7.hyph \
 alt7.pat \
 alt7.word \
+longlines.hyph \
+longlines.pat \
+longlines.word \
 alt.hyph \
 alt.pat \
 alt.word \
@@ -105,6 +109,7 @@ alt4.test \
 alt5.test \
 alt6.test \
 alt7.test \
+longlines.test \
 alt.test \
 basealt2.test \
 basealt.test \

tests/longlines.hyph

@@ -0,0 +1 @@
+a=bc=d

tests/longlines.pat

@@ -0,0 +1,10 @@
+ISO8859-1
+LEFTHYPHENMIN 1
+RIGHTHYPHENMIN 1
+% Check whether characters over MAX_CHARS are not treated as new line
+% This test is valid as long as MAX_CHARS is 100
+%
+% Following pattern should result in a=bc=d hyphenation
+a1b2c1d
+% and should not be overriden by pattern from too long comment (over MAX_CHARS characters)
+%|------------------------------ this part is 100 characters long --------------------------------|a8b9c8d

tests/longlines.test

@@ -0,0 +1,4 @@
+#!/bin/sh
+DIR="`dirname $0`"
+NAME="`basename $0 .test`"
+$DIR/test.sh $NAME.pat $NAME.word $NAME.hyph

tests/longlines.word

@@ -0,0 +1 @@
+abcd