From 173fc842c4eb1da6ca07a4ab6026c4c62bc8c09b Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Sun, 9 Sep 2018 18:07:11 -0400
Subject: basic compiler id hash working

---
 src/util.cpp | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'src/util.cpp')

diff --git a/src/util.cpp b/src/util.cpp
index cafd2c3d85..060d7f8fb5 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -43,3 +43,42 @@ uint32_t ptr_hash(const void *ptr) {
 bool ptr_eq(const void *a, const void *b) {
     return a == b;
 }
+
+// Ported from std/mem.zig.
+bool SplitIterator_isSplitByte(SplitIterator *self, uint8_t byte) {
+    for (size_t i = 0; i < self->split_bytes.len; i += 1) {
+        if (byte == self->split_bytes.ptr[i]) {
+            return true;
+        }
+    }
+    return false;
+}
+
+// Ported from std/mem.zig.
+Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self) {
+    // move to beginning of token
+    while (self->index < self->buffer.len &&
+        SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
+    {
+        self->index += 1;
+    }
+    size_t start = self->index;
+    if (start == self->buffer.len) {
+        return {};
+    }
+
+    // move to end of token
+    while (self->index < self->buffer.len &&
+        !SplitIterator_isSplitByte(self, self->buffer.ptr[self->index]))
+    {
+        self->index += 1;
+    }
+    size_t end = self->index;
+
+    return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
+}
+
+// Ported from std/mem.zig
+SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes) {
+    return SplitIterator{0, buffer, split_bytes};
+}
-- 
cgit v1.2.3


From e3f0ba4984f932cd3a9a99504d540b4cd8393364 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Thu, 13 Sep 2018 11:24:57 -0400
Subject: alternate fix using the rest() function

---
 src/cache_hash.cpp | 16 +++-------------
 src/util.cpp       | 10 ++++++++++
 src/util.hpp       |  3 ++-
 3 files changed, 15 insertions(+), 14 deletions(-)

(limited to 'src/util.cpp')

diff --git a/src/cache_hash.cpp b/src/cache_hash.cpp
index dcf15d16b9..5b1f55686a 100644
--- a/src/cache_hash.cpp
+++ b/src/cache_hash.cpp
@@ -337,22 +337,12 @@ Error cache_hit(CacheHash *ch, Buf *out_digest) {
             return ErrorInvalidFormat;
         }
 
-        // We should be at the last item,
-        // so switch from iterating on spaces ' ' to newlines '\n'
-        // First, check to make sure we have the runway to do so:
-        if (it.index == it.buffer.len) {
+        Slice<uint8_t> file_path = SplitIterator_rest(&it);
+        if (file_path.len == 0) {
             os_file_close(ch->manifest_file);
             return ErrorInvalidFormat;
         }
-        it.index++;
-        // Too close for missiles, I’m switching to guns
-        it.split_bytes = str("\n");
-        Optional<Slice<uint8_t>> opt_file_path = SplitIterator_next(&it);
-        if (!opt_file_path.is_some) {
-            os_file_close(ch->manifest_file);
-            return ErrorInvalidFormat;
-        }
-        Buf *this_path = buf_create_from_slice(opt_file_path.value);
+        Buf *this_path = buf_create_from_slice(file_path);
         if (chf->path != nullptr && !buf_eql_buf(this_path, chf->path)) {
             os_file_close(ch->manifest_file);
             return ErrorInvalidFormat;
diff --git a/src/util.cpp b/src/util.cpp
index 060d7f8fb5..192d74e766 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -78,6 +78,16 @@ Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self) {
     return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
 }
 
+// Ported from std/mem.zig
+Slice<uint8_t> SplitIterator_rest(SplitIterator *self) {
+    // move to beginning of token
+    size_t index = self->index;
+    while (index < self->buffer.len && SplitIterator_isSplitByte(self, self->buffer.ptr[index])) {
+        index += 1;
+    }
+    return self->buffer.sliceFrom(index);
+}
+
 // Ported from std/mem.zig
 SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes) {
     return SplitIterator{0, buffer, split_bytes};
diff --git a/src/util.hpp b/src/util.hpp
index f18c369fb5..fa5804efb5 100644
--- a/src/util.hpp
+++ b/src/util.hpp
@@ -263,7 +263,8 @@ struct SplitIterator {
 };
 
 bool SplitIterator_isSplitByte(SplitIterator *self, uint8_t byte);
-Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self);
+Optional< Slice<uint8_t> > SplitIterator_next(SplitIterator *self);
+Slice<uint8_t> SplitIterator_rest(SplitIterator *self);
 SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes);
 
 #endif
-- 
cgit v1.2.3