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在 DOCX 与 PPTX 中替换文本

replace_text(needle, replacement) 会遍历 DOCX 中每一个 <w:t> 元素（正文、页眉、页脚），以及 PPTX 中每张幻灯片和备注幻灯片里的每一个 <a:t>。返回实际替换次数。

这是做模板化的正确工具：在源文档中定义 {{占位符}}，运行时再填入具体内容。

单次替换

Rust

use office_oxide::edit::EditableDocument;

let mut ed = EditableDocument::open("contract.docx")?;
let n = ed.replace_text("{{client_name}}", "Acme Corp");
println!("{n} replacements");
ed.save("contract_acme.docx")?;

Python

from office_oxide import EditableDocument

with EditableDocument.open("contract.docx") as ed:
    n = ed.replace_text("{{client_name}}", "Acme Corp")
    print(f"{n} replacements")
    ed.save("contract_acme.docx")

JavaScript

import { EditableDocument } from 'office-oxide';

using ed = EditableDocument.open('contract.docx');
const n = ed.replaceText('{{client_name}}', 'Acme Corp');
console.log(`${n} replacements`);
ed.save('contract_acme.docx');

Go

ed, _ := officeoxide.OpenEditable("contract.docx")
defer ed.Close()
n, _ := ed.ReplaceText("{{client_name}}", "Acme Corp")
fmt.Printf("%d replacements\n", n)
ed.Save("contract_acme.docx")

C#

using var ed = EditableDocument.Open("contract.docx");
long n = ed.ReplaceText("{{client_name}}", "Acme Corp");
Console.WriteLine($"{n} replacements");
ed.Save("contract_acme.docx");

C

int err = 0;
OfficeEditableHandle *ed = office_editable_open("contract.docx", &err);
int64_t n = office_editable_replace_text(ed, "{{client_name}}", "Acme Corp", &err);
printf("%lld replacements\n", (long long)n);
office_editable_save(ed, "contract_acme.docx", &err);
office_editable_free(ed);

多字段批量填充

在保存之前一次性完成所有替换，比每次重新打开文件要高效得多。

Rust

let fields = [
    ("{{client_name}}",   "Acme Corp"),
    ("{{contract_date}}", "2026-04-19"),
    ("{{amount}}",        "$120,000"),
    ("{{tier}}",          "Enterprise"),
];

let mut ed = EditableDocument::open("contract.docx")?;
for (needle, value) in fields {
    ed.replace_text(needle, value);
}
ed.save("contract_acme.docx")?;

Python

fields = {
    "{{client_name}}":   "Acme Corp",
    "{{contract_date}}": "2026-04-19",
    "{{amount}}":        "$120,000",
    "{{tier}}":          "Enterprise",
}

with EditableDocument.open("contract.docx") as ed:
    for needle, value in fields.items():
        ed.replace_text(needle, value)
    ed.save("contract_acme.docx")

JavaScript

const fields = {
  '{{client_name}}':   'Acme Corp',
  '{{contract_date}}': '2026-04-19',
  '{{amount}}':        '$120,000',
  '{{tier}}':          'Enterprise',
};

using ed = EditableDocument.open('contract.docx');
for (const [k, v] of Object.entries(fields)) ed.replaceText(k, v);
ed.save('contract_acme.docx');

C

const char *keys[]   = { "{{client_name}}", "{{contract_date}}", "{{amount}}", "{{tier}}" };
const char *values[] = { "Acme Corp",       "2026-04-19",        "$120,000",   "Enterprise" };

int err = 0;
OfficeEditableHandle *ed = office_editable_open("contract.docx", &err);
for (size_t i = 0; i < 4; i++) {
    office_editable_replace_text(ed, keys[i], values[i], &err);
}
office_editable_save(ed, "contract_acme.docx", &err);
office_editable_free(ed);

PPTX 模板化

API 与行为完全相同——replace_text 会遍历每张幻灯片和每张备注幻灯片。

Rust

let mut ed = EditableDocument::open("deck_template.pptx")?;
ed.replace_text("{{quarter}}", "Q4 2026");
ed.replace_text("{{growth}}",  "+18.4%");
ed.save("q4_deck.pptx")?;

Python

with EditableDocument.open("deck_template.pptx") as ed:
    ed.replace_text("{{quarter}}", "Q4 2026")
    ed.replace_text("{{growth}}",  "+18.4%")
    ed.save("q4_deck.pptx")

JavaScript

using ed = EditableDocument.open('deck_template.pptx');
ed.replaceText('{{quarter}}', 'Q4 2026');
ed.replaceText('{{growth}}',  '+18.4%');
ed.save('q4_deck.pptx');

Go

ed, _ := officeoxide.OpenEditable("deck_template.pptx")
defer ed.Close()
ed.ReplaceText("{{quarter}}", "Q4 2026")
ed.ReplaceText("{{growth}}", "+18.4%")
ed.Save("q4_deck.pptx")

C#

using var ed = EditableDocument.Open("deck_template.pptx");
ed.ReplaceText("{{quarter}}", "Q4 2026");
ed.ReplaceText("{{growth}}", "+18.4%");
ed.Save("q4_deck.pptx");

C

int err = 0;
OfficeEditableHandle *ed = office_editable_open("deck_template.pptx", &err);
office_editable_replace_text(ed, "{{quarter}}", "Q4 2026", &err);
office_editable_replace_text(ed, "{{growth}}",  "+18.4%", &err);
office_editable_save(ed, "q4_deck.pptx", &err);
office_editable_free(ed);

关于 run 边界

DOCX 与 PPTX 将文本分割成「run」——同一样式的连续片段。如果用户在 token 中间粘贴或触发了自动更正，Word 内部可能会把 {{name}} 存为三个独立的 run。replace_text 能透明地处理跨 run 匹配：搜索之前，它会先将相邻且样式相同的 run 合并。

如果占位符中含有特殊字符或带样式的 span，建议使用 {{name}} 这样的纯 ASCII token，而不是 Word 的「智能引号」，以降低跨 run 合并的开销。

XLSX 的情况不同

replace_text 在 XLSX 上始终返回 0，因为电子表格的文本存储在 shared-strings 表和单元格公式中，而非 <w:t> / <a:t> 元素里。请改用 set_cell。

相关链接