cpp conversion: remove useless pj_, PJ_ and proj_ filename prefixes

1 files changed, 213 insertions, 0 deletions

diff --git a/src/fileapi.cpp b/src/fileapi.cpp
new file mode 100644
index 00000000..3df73236
--- /dev/null
+++ b/src/fileapi.cpp
@@ -0,0 +1,213 @@
+/******************************************************************************
+ * Project:  PROJ.4
+ * Purpose:  Implementation of the pj_ctx_* file api, and the default stdio
+ *           based implementation.
+ * Author:   Frank Warmerdam, warmerdam@pobox.com
+ *
+ ******************************************************************************
+ * Copyright (c) 2013, Frank Warmerdam
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *****************************************************************************/
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "projects.h"
+
+static PAFile stdio_fopen(projCtx ctx, const char *filename,
+                             const char *access);
+static size_t stdio_fread(void *buffer, size_t size, size_t nmemb,
+                             PAFile file);
+static int stdio_fseek(PAFile file, long offset, int whence);
+static long stdio_ftell(PAFile file);
+static void stdio_fclose(PAFile file);
+
+static projFileAPI default_fileapi = {
+    stdio_fopen,
+    stdio_fread,
+    stdio_fseek,
+    stdio_ftell,
+    stdio_fclose
+};
+
+typedef struct {
+    projCtx ctx;
+    FILE *fp;
+} stdio_pafile;
+
+/************************************************************************/
+/*                       pj_get_default_fileapi()                       */
+/************************************************************************/
+
+projFileAPI *pj_get_default_fileapi(void)
+{
+    return &default_fileapi;
+}
+
+/************************************************************************/
+/*                           stdio_fopen()                           */
+/************************************************************************/
+
+static PAFile stdio_fopen(projCtx ctx, const char *filename,
+                             const char *access)
+{
+    stdio_pafile *pafile;
+    FILE *fp;
+
+    fp = fopen(filename, access);
+    if (fp == nullptr)
+    {
+        return nullptr;
+    }
+
+    pafile = (stdio_pafile *) malloc(sizeof(stdio_pafile));
+    if (!pafile)
+    {
+        pj_ctx_set_errno(ctx, ENOMEM);
+        fclose(fp);
+        return nullptr;
+    }
+
+    pafile->fp = fp;
+    pafile->ctx = ctx;
+    return (PAFile) pafile;
+}
+
+/************************************************************************/
+/*                           stdio_fread()                           */
+/************************************************************************/
+
+static size_t stdio_fread(void *buffer, size_t size, size_t nmemb,
+                             PAFile file)
+{
+    stdio_pafile *pafile = (stdio_pafile *) file;
+    return fread(buffer, size, nmemb, pafile->fp);
+}
+
+/************************************************************************/
+/*                           stdio_fseek()                           */
+/************************************************************************/
+static int stdio_fseek(PAFile file, long offset, int whence)
+{
+    stdio_pafile *pafile = (stdio_pafile *) file;
+    return fseek(pafile->fp, offset, whence);
+}
+
+/************************************************************************/
+/*                           stdio_ftell()                           */
+/************************************************************************/
+static long stdio_ftell(PAFile file)
+{
+    stdio_pafile *pafile = (stdio_pafile *) file;
+    return ftell(pafile->fp);
+}
+
+/************************************************************************/
+/*                          stdio_fclose()                           */
+/************************************************************************/
+static void stdio_fclose(PAFile file)
+{
+    stdio_pafile *pafile = (stdio_pafile *) file;
+    fclose(pafile->fp);
+    free(pafile);
+}
+
+/************************************************************************/
+/*                            pj_ctx_fopen()                            */
+/*                                                                      */
+/*      Open a file using the provided file io hooks.                   */
+/************************************************************************/
+
+PAFile pj_ctx_fopen(projCtx ctx, const char *filename, const char *access)
+{
+    return ctx->fileapi->FOpen(ctx, filename, access);
+}
+
+/************************************************************************/
+/*                            pj_ctx_fread()                            */
+/************************************************************************/
+size_t pj_ctx_fread(projCtx ctx, void *buffer, size_t size, size_t nmemb, PAFile file)
+{
+    return ctx->fileapi->FRead(buffer, size, nmemb, file);
+}
+
+/************************************************************************/
+/*                            pj_ctx_fseek()                            */
+/************************************************************************/
+int    pj_ctx_fseek(projCtx ctx, PAFile file, long offset, int whence)
+{
+    return ctx->fileapi->FSeek(file, offset, whence);
+}
+
+/************************************************************************/
+/*                            pj_ctx_ftell()                            */
+/************************************************************************/
+long   pj_ctx_ftell(projCtx ctx, PAFile file)
+{
+    return ctx->fileapi->FTell(file);
+}
+
+/************************************************************************/
+/*                           pj_ctx_fclose()                            */
+/************************************************************************/
+void   pj_ctx_fclose(projCtx ctx, PAFile file)
+{
+    ctx->fileapi->FClose(file);
+}
+
+/************************************************************************/
+/*                            pj_ctx_fgets()                            */
+/*                                                                      */
+/*      A not very optimal implementation of fgets on top of            */
+/*      fread().  If we end up using this a lot more care should be     */
+/*      taken.                                                          */
+/************************************************************************/
+
+char *pj_ctx_fgets(projCtx ctx, char *line, int size, PAFile file)
+{
+    long start = pj_ctx_ftell(ctx, file);
+    size_t bytes_read;
+    int i;
+    int max_size;
+
+    line[size-1] = '\0';
+    bytes_read = pj_ctx_fread(ctx, line, 1, size-1, file);
+    if(bytes_read == 0)
+        return nullptr;
+    if(bytes_read < (size_t)size)
+    {
+        line[bytes_read] = '\0';
+    }
+
+    max_size = (int)MIN(bytes_read, (size_t)(size > 2 ? size - 2 : 0));
+    for( i = 0; i < max_size; i++)
+    {
+        if (line[i] == '\n')
+        {
+            line[i+1] = '\0';
+            pj_ctx_fseek(ctx, file, start + i + 1, SEEK_SET);
+            break;
+        }
+    }
+    return line;
+}