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examples/texti18n: WIP: bug fix: rotate some glyphs for vertical textts
Closes #2849
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| // Copyright 2023 The Ebitengine Authors | ||
| // | ||
| // 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. | ||
|
|
||
| //go:build ignore | ||
|
|
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| package main | ||
|
|
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| import ( | ||
| "bufio" | ||
| "errors" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "os" | ||
| "regexp" | ||
| ) | ||
|
|
||
| func main() { | ||
| if err := run(); err != nil { | ||
| fmt.Fprintln(os.Stderr, err) | ||
| os.Exit(1) | ||
| } | ||
| } | ||
|
|
||
| type rangeAndValue struct { | ||
| start rune | ||
| end rune | ||
| value string | ||
| } | ||
|
|
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| func run() error { | ||
| f, err := os.Create("table.go") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
|
||
| w := bufio.NewWriter(f) | ||
| defer w.Flush() | ||
|
|
||
| if _, err := fmt.Fprintf(w, `// Copyright 2023 The Ebitengine Authors | ||
| // | ||
| // 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. | ||
| // Code generated by gen.go using 'go generate'. DO NOT EDIT. | ||
| package vo | ||
| func get(r rune) Value { | ||
| switch { | ||
| `); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := forEachRange(func(rv rangeAndValue) error { | ||
| if rv.start != rv.end { | ||
| if _, err := fmt.Fprintf(w, ` case 0x%x <= r && r <= 0x%x: | ||
| return %s | ||
| `, rv.start, rv.end, rv.value); err != nil { | ||
| return err | ||
| } | ||
| } else { | ||
| if _, err := fmt.Fprintf(w, ` case r == 0x%x: | ||
| return %s | ||
| `, rv.start, rv.value); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return nil | ||
| }); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if _, err := fmt.Fprintf(w, ` } | ||
| return U | ||
| } | ||
| `); err != nil { | ||
| return err | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func forEachRange(f func(rv rangeAndValue) error) error { | ||
| const url = `https://www.unicode.org/Public/vertical/revision-17/VerticalOrientation-17.txt` | ||
|
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| resp, err := http.Get(url) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
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| reRange := regexp.MustCompile(`^([0-9a-fA-F]{4,})(..([0-9a-fA-F]{4,}))? ; (U|R|Tu|Tr)$`) | ||
|
|
||
| var lastRV rangeAndValue | ||
| r := bufio.NewReader(resp.Body) | ||
| for { | ||
| line, err := r.ReadString('\n') | ||
| if line != "" { | ||
| // Remove the tail '\n'. | ||
| line = line[:len(line)-1] | ||
| if m := reRange.FindStringSubmatch(line); m != nil { | ||
| start := decodeHexToRune(m[1]) | ||
| end := start | ||
| if m[3] != "" { | ||
| end = decodeHexToRune(m[3]) | ||
| } | ||
| value := m[4] | ||
| if lastRV.value == value { | ||
| lastRV.end = end | ||
| } else { | ||
| if lastRV.value != "" { | ||
| if err := f(lastRV); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| lastRV = rangeAndValue{ | ||
| start: start, | ||
| end: end, | ||
| value: value, | ||
| } | ||
| } | ||
| } | ||
| } | ||
| if errors.Is(err, io.EOF) { | ||
| break | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| if err := f(lastRV); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func decodeHexToRune(str string) rune { | ||
| var r rune | ||
| for len(str) > 0 { | ||
| r *= 16 | ||
| c := str[0] | ||
| str = str[1:] | ||
| switch { | ||
| case '0' <= c && c <= '9': | ||
| r += rune(c - '0') | ||
| case 'A' <= c && c <= 'F': | ||
| r += rune(c - 'A' + 10) | ||
| case 'a' <= c && c <= 'f': | ||
| r += rune(c - 'a' + 10) | ||
| default: | ||
| panic("not reached") | ||
| } | ||
| } | ||
| return r | ||
| } |
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