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package main | |
import ( | |
"fmt" | |
"io/ioutil" | |
"log" | |
"os" | |
"regexp" | |
) | |
const ( | |
figStart = `<figure` | |
figEnd = `</figure>` | |
outFmt = ` | |
{{%% figure src="/post/%s/$1.jpg" alt="$2" caption="$3" %%}} | |
` | |
) | |
var ( | |
figRE = regexp.MustCompile(`<figure.*?>.*?<img.*?src=".*?([-\w]+)-\d\d\dx\d\d\d.*?\.jpg.*?alt="(.*?)".*?<figcaption.*?>(.*?)</figcaption></figure>`) | |
figStartRE = regexp.MustCompile(figStart) | |
figEndRE = regexp.MustCompile(figEnd) | |
fnameRE = regexp.MustCompile(`(\d+).*`) | |
) | |
func process(filename string) error { | |
n := fnameRE.FindStringSubmatch(filename) | |
b, err := ioutil.ReadFile(filename) | |
if err != nil { | |
return err | |
} | |
figs := figStartRE.FindAllIndex(b, -1) | |
fige := figEndRE.FindAllIndex(b, -1) | |
if got, want := len(figs), len(fige); got != want { | |
return fmt.Errorf("unclosed tag [%d != %d]", got, want) | |
} | |
for i := range figs { | |
for j, c := range b[figs[i][1]:fige[i][0]] { | |
if c == '\n' || c == '\r' { | |
b[j+figs[i][1]] = ' ' | |
} | |
} | |
} | |
of := []byte(fmt.Sprintf(outFmt, n[1])) | |
return ioutil.WriteFile(filename+".fixed", figRE.ReplaceAll(b, of), os.FileMode(0666)) | |
} | |
func main() { | |
for _, fn := range os.Args[1:] { | |
if err := process(fn); err != nil { | |
log.Println(err) | |
} | |
} | |
} |