From a550c7f22985048a0089a529ca89061ab80daff2 Mon Sep 17 00:00:00 2001
From: Shav Kinderlehrer <shav@trinket.icu>
Date: Mon, 17 Apr 2023 10:23:52 -0400
Subject: Add optional processing stage

---
 src/lib/file.c    | 15 ++++++-----
 src/lib/process.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+), 6 deletions(-)
 create mode 100644 src/lib/process.c

(limited to 'src/lib')

diff --git a/src/lib/file.c b/src/lib/file.c
index f1efa04..f8453d2 100644
--- a/src/lib/file.c
+++ b/src/lib/file.c
@@ -2,26 +2,29 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "file.h"
+#include "types.h"
 #include "util.h"
 
 struct filedata readfile(FILE *fp) {
   struct filedata f;
 
   f.lc = 0;
-  f.len = 0;
+  f.buflen = 0;
   f.binary = 0;
 
+  f.buf = NULL;
+  f.lines = NULL;
+
   // expects to be at  beginning of file
   fseek(fp, 0, SEEK_END);
-  f.len = ftell(fp);
+  f.buflen = ftell(fp);
   fseek(fp, 0, SEEK_SET);
 
-  f.buf = malloc(f.len);
+  f.buf = malloc(f.buflen);
   if (f.buf == NULL)
     die("malloc");
 
-  if (fread(f.buf, f.len, 1, fp) < 0) {
+  if (fread(f.buf, f.buflen, 1, fp) < 0) {
     die("fread");
   }
 
@@ -29,7 +32,7 @@ struct filedata readfile(FILE *fp) {
 
   // guess if printable
   // from https://github.com/sharkdp/content_inspector/blob/master/src/lib.rs
-  int testlen = f.len >= 64 ? 64 : f.len;
+  int testlen = f.buflen >= 64 ? 64 : f.buflen;
   char *testbuf[testlen];
   memcpy(testbuf, f.buf, testlen);
 
diff --git a/src/lib/process.c b/src/lib/process.c
new file mode 100644
index 0000000..61261d9
--- /dev/null
+++ b/src/lib/process.c
@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "types.h"
+#include "util.h"
+
+void appendline(struct filedata *f, char *data, size_t len) {
+  f->lines = realloc(f->lines, sizeof(struct line) * (f->lc + 1));
+
+  size_t loc = f->lc;
+
+  f->lines[loc].len = len;
+  f->lines[loc].buf = malloc(len + 1);
+  memcpy(f->lines[loc].buf, data, len);
+  f->lines[loc].buf[len] = '\0';
+}
+
+void loadlines(struct filedata *f) {
+  f->lc = 0;
+
+  size_t offset = 0;
+  size_t linelen = 4096;
+  char *line = malloc(linelen);
+  if (line == NULL)
+    die("malloc");
+
+  for (size_t i = 0; i < f->buflen; i++) {
+    char c = f->buf[i];
+    if (c == '\n') {
+      if (offset < linelen) {
+        char *new_line = realloc(line, offset);
+        if (new_line == NULL)
+          die("realloc");
+        line = new_line;
+      }
+
+      appendline(f, line, offset);
+      f->lc++;
+
+      free(line);
+      offset = 0;
+      line = malloc(linelen);
+      if (line == NULL)
+        die("malloc");
+
+    } else {
+      if (offset == linelen) {
+        linelen *= 2;
+
+        char *new_line = realloc(line, linelen);
+        if (new_line == NULL)
+          die("realloc");
+
+        line = new_line;
+      }
+
+      line[offset++] = c;
+    }
+  }
+}
+
+char *linepad(int lc, int total) {
+  int padlen = intlen(total) - intlen(lc);
+  char *padding = malloc(padlen + 1);
+  if (padding == NULL)
+    die("malloc");
+
+  if (padlen)
+    memset(padding, ' ', padlen);
+  padding[padlen] = '\0';
+
+  return padding;
+}
-- 
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