mirror of
https://github.com/infiniflow/ragflow.git
synced 2026-07-25 18:03:29 +08:00
bd355deaa9
### Summary In Go 1.21, the standard library includes built-in [max/min](https://pkg.go.dev/builtin@go1.21.0#max) function, which can greatly simplify the code. Signed-off-by: futurehua <futurehua@outlook.com>
119 lines
3.2 KiB
Go
119 lines
3.2 KiB
Go
//
|
|
// Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
|
|
package io
|
|
|
|
import (
|
|
"bytes"
|
|
"image"
|
|
_ "image/png"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"testing"
|
|
)
|
|
|
|
func TestWritePDF_UsesGoLibrary(t *testing.T) {
|
|
requirePDFLatinFont(t)
|
|
out, err := WritePDF("Hello\n中文", PDFOptions{})
|
|
if err != nil {
|
|
t.Fatalf("WritePDF: %v", err)
|
|
}
|
|
if !bytes.HasPrefix(out, []byte("%PDF-")) {
|
|
t.Fatalf("PDF output missing magic header: %q", out[:min(len(out), 8)])
|
|
}
|
|
}
|
|
|
|
func TestWritePDF_RendersVisibleText(t *testing.T) {
|
|
requirePDFLatinFont(t)
|
|
if _, err := exec.LookPath("pdftoppm"); err != nil {
|
|
t.Skip("pdftoppm not available")
|
|
}
|
|
if _, err := exec.LookPath("pdftotext"); err != nil {
|
|
t.Skip("pdftotext not available")
|
|
}
|
|
|
|
out, err := WritePDF("Visible PDF body", PDFOptions{
|
|
HeaderText: "Visible Header",
|
|
FooterText: "Visible Footer",
|
|
AddPageNumbers: true,
|
|
AddTimestamp: false,
|
|
})
|
|
if err != nil {
|
|
t.Fatalf("WritePDF: %v", err)
|
|
}
|
|
|
|
dir := t.TempDir()
|
|
pdfPath := filepath.Join(dir, "visible.pdf")
|
|
if err := os.WriteFile(pdfPath, out, 0o600); err != nil {
|
|
t.Fatalf("WriteFile pdf: %v", err)
|
|
}
|
|
prefix := filepath.Join(dir, "page")
|
|
cmd := exec.Command("pdftoppm", "-png", "-singlefile", pdfPath, prefix)
|
|
if output, err := cmd.CombinedOutput(); err != nil {
|
|
t.Fatalf("pdftoppm: %v: %s", err, output)
|
|
}
|
|
pngFile, err := os.Open(prefix + ".png")
|
|
if err != nil {
|
|
t.Fatalf("Open png: %v", err)
|
|
}
|
|
defer pngFile.Close()
|
|
img, _, err := image.Decode(pngFile)
|
|
if err != nil {
|
|
t.Fatalf("Decode png: %v", err)
|
|
}
|
|
bounds := img.Bounds()
|
|
nonWhite := 0
|
|
for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
|
|
for x := bounds.Min.X; x < bounds.Max.X; x++ {
|
|
r, g, b, _ := img.At(x, y).RGBA()
|
|
if r != 0xffff || g != 0xffff || b != 0xffff {
|
|
nonWhite++
|
|
}
|
|
}
|
|
}
|
|
if nonWhite == 0 {
|
|
t.Fatal("rendered PDF page is blank")
|
|
}
|
|
|
|
textOutput, err := exec.Command("pdftotext", pdfPath, "-").CombinedOutput()
|
|
if err != nil {
|
|
t.Fatalf("pdftotext: %v: %s", err, textOutput)
|
|
}
|
|
if !bytes.Contains(textOutput, []byte("Visible PDF body")) {
|
|
t.Fatalf("pdftotext output = %q, want body text", textOutput)
|
|
}
|
|
}
|
|
|
|
func TestResolvePDFLatinFontPathHonorsEnv(t *testing.T) {
|
|
dir := t.TempDir()
|
|
fontPath := filepath.Join(dir, "custom.ttf")
|
|
if err := os.WriteFile(fontPath, []byte("placeholder"), 0o600); err != nil {
|
|
t.Fatalf("WriteFile font: %v", err)
|
|
}
|
|
t.Setenv("RAGFLOW_PDF_LATIN_FONT_PATH", fontPath)
|
|
if got := resolvePDFLatinFontPath(); got != fontPath {
|
|
t.Fatalf("resolvePDFLatinFontPath() = %q, want %q", got, fontPath)
|
|
}
|
|
}
|
|
|
|
func requirePDFLatinFont(t *testing.T) {
|
|
t.Helper()
|
|
if resolvePDFLatinFontPath() == "" {
|
|
t.Skip("no local Latin PDF font available")
|
|
}
|
|
}
|