curl: add --output-dir

Works with --create-dirs and with -J

Add test 3008, 3009, 3011, 3012 and 3013 to verify.

Closes #5637

src/tool_cb_wrt.c

@@ -39,6 +39,15 @@
 
 #include "memdebug.h" /* keep this as LAST include */
 
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+#ifdef WIN32
+#define OPENMODE S_IREAD | S_IWRITE
+#else
+#define OPENMODE S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
+#endif
+
 /* create a local file for writing, return TRUE on success */
 bool tool_create_output_file(struct OutStruct *outs,
                              struct OperationConfig *config)
@@ -55,21 +64,24 @@ bool tool_create_output_file(struct OutStruct *outs,
 
   if(outs->is_cd_filename) {
     /* don't overwrite existing files */
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-    int fd = open(outs->filename, O_CREAT | O_WRONLY | O_EXCL | O_BINARY,
-#ifdef WIN32
-                  S_IREAD | S_IWRITE
-#else
-                  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
-#endif
-      );
+    int fd;
+    char *name = outs->filename;
+    char *aname = NULL;
+    if(config->output_dir) {
+      aname = aprintf("%s/%s", config->output_dir, name);
+      if(!aname) {
+        errorf(global, "out of memory\n");
+        return FALSE;
+      }
+      name = aname;
+    }
+    fd = open(name, O_CREAT | O_WRONLY | O_EXCL | O_BINARY, OPENMODE);
     if(fd != -1) {
       file = fdopen(fd, "wb");
       if(!file)
         close(fd);
     }
+    free(aname);
   }
   else
     /* open file for writing */

src/tool_cfgable.c

@@ -89,6 +89,7 @@ static void free_config_fields(struct OperationConfig *config)
   Curl_safefree(config->mail_auth);
 
   Curl_safefree(config->netrc_file);
+  Curl_safefree(config->output_dir);
 
   urlnode = config->url_list;
   while(urlnode) {

src/tool_cfgable.h

@@ -80,6 +80,7 @@ struct OperationConfig {
   double connecttimeout;
   long maxredirs;
   curl_off_t max_filesize;
+  char *output_dir;
   char *headerfile;
   char *ftpport;
   char *iface;

src/tool_getparam.c

@@ -303,6 +303,7 @@ static const struct LongShort aliases[]= {
   {"o",  "output",                   ARG_FILENAME},
   {"O",  "remote-name",              ARG_NONE},
   {"Oa", "remote-name-all",          ARG_BOOL},
+  {"Ob", "output-dir",               ARG_STRING},
   {"p",  "proxytunnel",              ARG_BOOL},
   {"P",  "ftp-port",                 ARG_STRING},
   {"q",  "disable",                  ARG_BOOL},
@@ -1911,6 +1912,10 @@ ParameterError getparameter(const char *flag, /* f or -long-flag */
         config->default_node_flags = toggle?GETOUT_USEREMOTE:0;
         break;
       }
+      else if(subletter == 'b') { /* --output-dir */
+        GetStr(&config->output_dir, nextarg);
+        break;
+      }
       /* FALLTHROUGH */
     case 'o': /* --output */
       /* output file */

src/tool_help.c

@@ -284,6 +284,8 @@ static const struct helptxt helptext[] = {
    "OAuth 2 Bearer Token"},
   {"-o, --output <file>",
    "Write to file instead of stdout"},
+  {"    --output-dir <dir>",
+   "Directory to save files in"},
   {"-Z, --parallel",
    "Perform transfers in parallel"},
   {"    --parallel-immediate",

src/tool_operate.c

@@ -1050,6 +1050,15 @@ static CURLcode single_transfer(struct GlobalConfig *global,
             }
           }
 
+          if(config->output_dir) {
+            char *d = aprintf("%s/%s", config->output_dir, per->outfile);
+            if(!d) {
+              result = CURLE_WRITE_ERROR;
+              break;
+            }
+            free(per->outfile);
+            per->outfile = d;
+          }
           /* Create the directory hierarchy, if not pre-existent to a multiple
              file output call */