Read a FILE* till an empty line or eof and return it as a char buffer.

In future maybe add char *end_str to interface to allow calling function
to specify end point.

1 files changed, 38 insertions, 0 deletions

diff --git a/libbb/read_text_file_to_buffer.c b/libbb/read_text_file_to_buffer.c
new file mode 100644
index 000000000..ef64ad712
--- /dev/null
+++ b/libbb/read_text_file_to_buffer.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "libbb.h"
+
+/*
+ * Reads consecutive lines from file line that start with end_string
+ * read finishes at an empty line or eof
+ */
+extern char *read_text_file_to_buffer(FILE *src_file)
+{
+        char *line = NULL;
+        char *buffer = NULL;
+        int buffer_length = 0;
+        int line_length = 0;
+
+        buffer = xmalloc(1);
+        strcpy(buffer, "");
+
+        /* Loop until line is empty, or just one char, which will be '\n' */
+        do {
+                line = get_line_from_file(src_file);
+                if (line == NULL) {
+                        break;
+                }
+                line_length = strlen(line);
+                buffer_length += line_length + 1;
+                buffer = (char *) xrealloc(buffer, buffer_length + 1);
+                strcat(buffer, line);
+                free(line);
+        } while (line_length > 1);
+
+        if (strlen(buffer) == 0) {
+                return(NULL);
+        } else {
+                return(strdup(buffer));
+        }
+}
\ No newline at end of file