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/*
* ========================
* ===== ===============
* ====== ================
* ====== ================
* ====== ==== ==== ==
* ====== === == = =
* ====== === = == =
* = === === = == ====
* = === === = == = =
* == ===== ==== ==
* ========================
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2023-2024, Joe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the organization nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* hardflip: src/c_utils.go
* Mon Jan 29 08:56:55 2024
* Joe
*
* core funcs
*/
package main
import (
"fmt"
"os"
)
// this function will go get the data folder and try to create it if it does
// not exist
// the first path being checked is $XDG_DATA_HOME then $HOME/.local/share
// it returns the full data directory path
func c_get_data_dir(ui *HardUI) string {
var ptr string
var home string
if home = os.Getenv("HOME"); len(home) == 0 {
if ui == nil {
c_die("env variable HOME not defined", nil)
}
c_error_mode("env variable HOME not defined", nil, ui)
return ""
}
xdg_home := os.Getenv("XDG_DATA_HOME")
if len(xdg_home) > 0 {
ptr = xdg_home
} else {
ptr = home + "/.local/share"
}
ptr += "/" + DATA_DIR_NAME
if _, err := os.Stat(ptr); os.IsNotExist(err) {
if err := os.MkdirAll(ptr, os.ModePerm); err != nil {
if ui == nil {
c_die("could not create path " + ptr, err)
}
c_error_mode("could not create path" + ptr, err, ui)
}
} else if err != nil {
if ui == nil {
c_die("could read path " + ptr, err)
}
c_error_mode("could read path" + ptr, err, ui)
return ""
}
return ptr
}
// c_die displays an error string to the stderr fd and exits the program
// with the return code 1
// it takes an optional err argument of the error type as a complement of
// information
func c_die(str string, err error) {
fmt.Fprintf(os.Stderr, "error: %s", str)
if err != nil {
fmt.Fprintf(os.Stderr, ": %v\n", err)
}
fmt.Fprintf(os.Stderr, "\n")
os.Exit(1)
}
func c_error_mode(msg string, err error, ui *HardUI) {
ui.mode = ERROR_MODE
err_str := ""
if err != nil {
err_str = fmt.Sprintf("%v", err)
}
ui.err[ERROR_MSG] = msg
ui.err[ERROR_ERR] = err_str
}
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