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/*
* Copyright (c) 2013 Kurt Jung (Gmail: kurt.w.jung)
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package gofpdf
import (
"bytes"
"compress/zlib"
"fmt"
// "github.com/davecgh/go-spew/spew"
"math"
"os"
)
func round(f float64) int {
if f < 0 {
return -int(math.Floor(-f + 0.5))
} else {
return int(math.Floor(f + 0.5))
}
}
func sprintf(fmtStr string, args ...interface{}) string {
return fmt.Sprintf(fmtStr, args...)
}
// Returns true if the specified normal file exists
func fileExist(filename string) (ok bool) {
info, err := os.Stat(filename)
if err == nil {
if ^os.ModePerm&info.Mode() == 0 {
ok = true
}
}
return ok
}
// Returns the size of the specified file; ok will be false
// if the file does not exist or is not an ordinary file
func fileSize(filename string) (size int64, ok bool) {
info, err := os.Stat(filename)
ok = err == nil
if ok {
size = info.Size()
}
return
}
// Returns a new buffer populated with the contents of the specified file
func bufferFromFile(fileStr string) (b *bytes.Buffer, err error) {
var fl *os.File
fl, err = os.Open(fileStr)
if err != nil {
return
}
defer fl.Close()
b = new(bytes.Buffer)
_, err = b.ReadFrom(fl)
return
}
// Returns a zlib-compressed copy of the specified byte array
func sliceCompress(data []byte) []byte {
var buf bytes.Buffer
cmp := zlib.NewWriter(&buf)
cmp.Write(data)
cmp.Close()
return buf.Bytes()
}
// Returns an uncompressed copy of the specified zlib-compressed byte array
func sliceUncompress(data []byte) (outData []byte, err error) {
inBuf := bytes.NewBuffer(data)
r, err := zlib.NewReader(inBuf)
defer r.Close()
if err == nil {
var outBuf bytes.Buffer
_, err = outBuf.ReadFrom(r)
if err == nil {
outData = outBuf.Bytes()
}
}
return
}
// Convert UTF-8 to UTF-16BE with BOM; from http://www.fpdf.org/
func utf8toutf16(s string) string {
res := make([]byte, 0, 8)
res = append(res, 0xFE, 0xFF)
nb := len(s)
i := 0
for i < nb {
c1 := byte(s[i])
i++
if c1 >= 224 {
// 3-byte character
c2 := byte(s[i])
i++
c3 := byte(s[i])
i++
res = append(res, ((c1&0x0F)<<4)+((c2&0x3C)>>2),
((c2&0x03)<<6)+(c3&0x3F))
} else if c1 >= 192 {
// 2-byte character
c2 := byte(s[i])
i++
res = append(res, ((c1 & 0x1C) >> 2),
((c1&0x03)<<6)+(c2&0x3F))
} else {
// Single-byte character
res = append(res, 0, c1)
}
}
return string(res)
}
// Return a if cnd is true, otherwise b
func intIf(cnd bool, a, b int) int {
if cnd {
return a
} else {
return b
}
}
// Return aStr if cnd is true, otherwise bStr
func strIf(cnd bool, aStr, bStr string) string {
if cnd {
return aStr
} else {
return bStr
}
}
// Dump the internals of the specified values
// func dump(fileStr string, a ...interface{}) {
// fl, err := os.OpenFile(fileStr, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
// if err == nil {
// fmt.Fprintf(fl, "----------------\n")
// spew.Fdump(fl, a...)
// fl.Close()
// }
// }
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