如何去code HTML实体使用C？ [英] How to decode HTML Entities in C?

问题描述

我很感兴趣，例如转义文本：＆放大器;＃x5c; 在C \\ 映射到有谁知道一个良好图书馆？

I'm interested in unescaping text for example: \ maps to \ in C. Does anyone know of a good library?

作为参考的XML和HTML字符实体引用的维基百科列表。

As reference the Wikipedia List of XML and HTML Character Entity References.

推荐答案

我有一些空闲时间今天从头写了德codeR：的entities.c ， entities.h 。

I had some free time today and wrote a decoder from scratch: entities.c, entities.h.

与外部连接的唯一功能是

The only function with external linkage is

size_t decode_html_entities_utf8(char *dest, const char *src);

如果的src 是空指针，该字符串将从 DEST 服用，即实体将被取消codeD原地。否则，德codeD字符串将放在 DEST - 这应该指向一个缓冲区足够大，以容纳的strlen（SRC）+ 1 字符 - 和的src 将保持不变。

If src is a null pointer, the string will be taken from dest, ie the entities will be decoded in-place. Otherwise, the decoded string will be put in dest - which should point to a buffer big enough to hold strlen(src) + 1 characters - and src will be unchanged.

该函数将返回去codeD字符串的长度。

The function will return the length of the decoded string.

请注意，我没有做任何广泛的测试，所以有错误的概率高...

Please note that I haven't done any extensive testing, so there's a high probability of bugs...

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