stradd allows multiple node use to retain data

2 files changed, 17 insertions, 3 deletions

diff --git a/nodelink.c b/nodelink.c
index b8dbb91..aaf8c18 100644
--- a/nodelink.c
+++ b/nodelink.c
@@ -11,9 +11,15 @@ node* newnode(void) {
     return new;
 }
 
+static char* empty(void) {
+    char* out = malloc(sizeof(char));
+    *out = 0;
+    return out;
+}
+
 link* newlink(node* to) {
     link* new = malloc(sizeof(link));
-    new->desc = ""; // preferred to NULL because it can be printed
+    new->desc = empty(); // preferred to NULL because it can be printed
     new->to = to;
     return new;
 }
diff --git a/read.c b/read.c
index f1ecea9..fee60ea 100644
--- a/read.c
+++ b/read.c
@@ -88,6 +88,14 @@ static char* resolvell(llnode* tail, size_t sz) {
     return out;
 }
 
+static void stradd(char** orig, char* new) { // new is freed
+    size_t nsz = strlen(new)+1;
+    size_t olen = strlen(*orig);
+    *orig = realloc(*orig,olen+nsz);
+    memcpy(*orig+olen,new,nsz);
+    free(new);
+}
+
 node* readfile(char* name) {
     FILE* read = fopen(name, "r");
     node *root, *cur;
@@ -103,7 +111,7 @@ node* readfile(char* name) {
     int c;
     while ( ( c = fgetc(read) ) != EOF ) {
         if (c == ':' || c == '-') {
-            curl->desc = resolvell(head->next, sz);
+            stradd(&(curl->desc),resolvell(head->next, sz));
             head->next = NULL;
             tail = head;
             sz = 0;
@@ -117,7 +125,6 @@ node* readfile(char* name) {
 
             case '-': ;
                 char* lname = line(read, false);
-                printf("%s.\n",lname);
                 node* at = insorget(root->links, lname)->to;
                 curl = addbstlink(cur->links, lname, at);
                 break;
@@ -130,6 +137,7 @@ node* readfile(char* name) {
                 break;
         }
     }
+    stradd(&(curl->desc),resolvell(head->next, sz));
     fclose(read);
     return root;
 }