1 files changed, 37 insertions, 0 deletions
diff --git a/src/bin/clump.c b/src/bin/clump.c
new file mode 100644
index 0000000..18c8e5b
--- /dev/null
+++ b/src/bin/clump.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+//clumps together consecutive rows containing the same first column
+//to have column 2- printed after a single column 1 value.
+//just try it out.
+//printf "a a\na b\na c\nb a\nb b\nc a\nc b\n" | clump
+//still working on the name.
+
+int main() {
+ char line[256];
+ char *id;
+ char *value;
+ char *oldid=malloc(1);
+ *oldid=0;
+ while(fgets(line,sizeof(line),stdin)) {
+  id=line;
+  if(strchr(line,'\n')) *strchr(line,'\n')=0;
+  if(strchr(id,' ')) {
+   value=strchr(id,' ');
+   *value=0;
+   value++;
+  }
+  if(strcmp(id,oldid)) {
+   if(*oldid != 0) {
+    printf("\n");
+   }
+   printf("%s:",id);
+   free(oldid);
+   oldid=strdup(id);
+  }
+  printf(" %s",value);
+ }
+ printf("\n");
+ return 0;
+}