libsparse: Add .clang-format and reformat to google3 style

Bug: 78793464
Test: compiles
Change-Id: I8e44ba77195a12fc2bac7d4276bbc4aa95149b31
diff --git a/libsparse/append2simg.cpp b/libsparse/append2simg.cpp
index 83450a0..99f4339 100644
--- a/libsparse/append2simg.cpp
+++ b/libsparse/append2simg.cpp
@@ -25,8 +25,8 @@
 #include <unistd.h>
 
 #include <sparse/sparse.h>
-#include "sparse_file.h"
 #include "backed_block.h"
+#include "sparse_file.h"
 
 #ifndef O_BINARY
 #define O_BINARY 0
@@ -40,100 +40,98 @@
 #define off64_t off_t
 #endif
 
-void usage()
-{
-    fprintf(stderr, "Usage: append2simg <output> <input>\n");
+void usage() {
+  fprintf(stderr, "Usage: append2simg <output> <input>\n");
 }
 
-int main(int argc, char *argv[])
-{
-    int output;
-    int output_block;
-    char *output_path;
-    struct sparse_file *sparse_output;
+int main(int argc, char* argv[]) {
+  int output;
+  int output_block;
+  char* output_path;
+  struct sparse_file* sparse_output;
 
-    int input;
-    char *input_path;
-    off64_t input_len;
+  int input;
+  char* input_path;
+  off64_t input_len;
 
-    int tmp_fd;
-    char *tmp_path;
+  int tmp_fd;
+  char* tmp_path;
 
-    int ret;
+  int ret;
 
-    if (argc == 3) {
-        output_path = argv[1];
-        input_path = argv[2];
-    } else {
-        usage();
-        exit(-1);
-    }
+  if (argc == 3) {
+    output_path = argv[1];
+    input_path = argv[2];
+  } else {
+    usage();
+    exit(-1);
+  }
 
-    ret = asprintf(&tmp_path, "%s.append2simg", output_path);
-    if (ret < 0) {
-        fprintf(stderr, "Couldn't allocate filename\n");
-        exit(-1);
-    }
+  ret = asprintf(&tmp_path, "%s.append2simg", output_path);
+  if (ret < 0) {
+    fprintf(stderr, "Couldn't allocate filename\n");
+    exit(-1);
+  }
 
-    output = open(output_path, O_RDWR | O_BINARY);
-    if (output < 0) {
-        fprintf(stderr, "Couldn't open output file (%s)\n", strerror(errno));
-        exit(-1);
-    }
+  output = open(output_path, O_RDWR | O_BINARY);
+  if (output < 0) {
+    fprintf(stderr, "Couldn't open output file (%s)\n", strerror(errno));
+    exit(-1);
+  }
 
-    sparse_output = sparse_file_import_auto(output, false, true);
-    if (!sparse_output) {
-        fprintf(stderr, "Couldn't import output file\n");
-        exit(-1);
-    }
+  sparse_output = sparse_file_import_auto(output, false, true);
+  if (!sparse_output) {
+    fprintf(stderr, "Couldn't import output file\n");
+    exit(-1);
+  }
 
-    input = open(input_path, O_RDONLY | O_BINARY);
-    if (input < 0) {
-        fprintf(stderr, "Couldn't open input file (%s)\n", strerror(errno));
-        exit(-1);
-    }
+  input = open(input_path, O_RDONLY | O_BINARY);
+  if (input < 0) {
+    fprintf(stderr, "Couldn't open input file (%s)\n", strerror(errno));
+    exit(-1);
+  }
 
-    input_len = lseek64(input, 0, SEEK_END);
-    if (input_len < 0) {
-        fprintf(stderr, "Couldn't get input file length (%s)\n", strerror(errno));
-        exit(-1);
-    } else if (input_len % sparse_output->block_size) {
-        fprintf(stderr, "Input file is not a multiple of the output file's block size");
-        exit(-1);
-    }
-    lseek64(input, 0, SEEK_SET);
+  input_len = lseek64(input, 0, SEEK_END);
+  if (input_len < 0) {
+    fprintf(stderr, "Couldn't get input file length (%s)\n", strerror(errno));
+    exit(-1);
+  } else if (input_len % sparse_output->block_size) {
+    fprintf(stderr, "Input file is not a multiple of the output file's block size");
+    exit(-1);
+  }
+  lseek64(input, 0, SEEK_SET);
 
-    output_block = sparse_output->len / sparse_output->block_size;
-    if (sparse_file_add_fd(sparse_output, input, 0, input_len, output_block) < 0) {
-        fprintf(stderr, "Couldn't add input file\n");
-        exit(-1);
-    }
-    sparse_output->len += input_len;
+  output_block = sparse_output->len / sparse_output->block_size;
+  if (sparse_file_add_fd(sparse_output, input, 0, input_len, output_block) < 0) {
+    fprintf(stderr, "Couldn't add input file\n");
+    exit(-1);
+  }
+  sparse_output->len += input_len;
 
-    tmp_fd = open(tmp_path, O_WRONLY | O_CREAT | O_BINARY, 0664);
-    if (tmp_fd < 0) {
-        fprintf(stderr, "Couldn't open temporary file (%s)\n", strerror(errno));
-        exit(-1);
-    }
+  tmp_fd = open(tmp_path, O_WRONLY | O_CREAT | O_BINARY, 0664);
+  if (tmp_fd < 0) {
+    fprintf(stderr, "Couldn't open temporary file (%s)\n", strerror(errno));
+    exit(-1);
+  }
 
-    lseek64(output, 0, SEEK_SET);
-    if (sparse_file_write(sparse_output, tmp_fd, false, true, false) < 0) {
-        fprintf(stderr, "Failed to write sparse file\n");
-        exit(-1);
-    }
+  lseek64(output, 0, SEEK_SET);
+  if (sparse_file_write(sparse_output, tmp_fd, false, true, false) < 0) {
+    fprintf(stderr, "Failed to write sparse file\n");
+    exit(-1);
+  }
 
-    sparse_file_destroy(sparse_output);
-    close(tmp_fd);
-    close(output);
-    close(input);
+  sparse_file_destroy(sparse_output);
+  close(tmp_fd);
+  close(output);
+  close(input);
 
-    ret = rename(tmp_path, output_path);
-    if (ret < 0) {
-        fprintf(stderr, "Failed to rename temporary file (%s)\n", strerror(errno));
-        exit(-1);
-    }
+  ret = rename(tmp_path, output_path);
+  if (ret < 0) {
+    fprintf(stderr, "Failed to rename temporary file (%s)\n", strerror(errno));
+    exit(-1);
+  }
 
-    free(tmp_path);
+  free(tmp_path);
 
-    exit(0);
+  exit(0);
 }