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fix: cursor offset incorrect when prompt prefix contains multibyte char in cli

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tiny-craft 2023-10-31 11:55:34 +08:00
parent 929c4d2794
commit c6f1daed44
1 changed files with 17 additions and 2 deletions
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19
frontend/src/components/content_value/ContentCli.vue
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@ -4,7 +4,7 @@ import { FitAddon } from 'xterm-addon-fit'
import { computed, defineExpose, onMounted, onUnmounted, ref, watch } from 'vue'
import 'xterm/css/xterm.css'
import { EventsEmit, EventsOff, EventsOn } from 'wailsjs/runtime/runtime.js'
import { get, isEmpty, set, size } from 'lodash'
import { get, isEmpty, set } from 'lodash'
import { CloseCli, StartCli } from 'wailsjs/go/services/cliService.js'
import usePreferencesStore from 'stores/preferences.js'
import { i18nGlobal } from '@/utils/i18n.js'
@ -102,6 +102,21 @@ const prefixContent = computed(() => {
return '\x1b[33m' + promptPrefix.value + '\x1b[0m'
})
const prefixLen = computed(() => {
let len = 0
for (let i = 0; i < promptPrefix.value.length; i++) {
const char = promptPrefix.value.charCodeAt(i)
if (char >= 0x0000 && char <= 0x00ff) {
// single byte ASCII char
len += 1
} else {
// multibyte Unicode char
len += 2
}
}
return len
})
let promptPrefix = ref('')
let inputCursor = 0
const inputHistory = []
@ -193,7 +208,7 @@ const moveInputCursor = (step) => {
}
if (updateCursor) {
termInst.write(`\x1B[${size(promptPrefix.value) + inputCursor + 1}G`)
termInst.write(`\x1B[${prefixLen.value + inputCursor + 1}G`)
}
}