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POParse a URL in C
 

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  1. POParse a URL in C
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    <p>I am trying to parse several elements of a URL in C. </p> <p>This is a prototype of a URL:</p> <blockquote> <p>ftp://[&lt; name>:&lt; pass>@]&lt; domain>/&lt; url>";</p> </blockquote> <p>The problem is that certain elements aren't being saved correctly, for example I try to save the <strong>ftp:// in here ftp[6]</strong>. However, when I print it I get something like this <strong>ftp:/d@</strong>. Which should not even be possible since the array does not have enough space for this. </p> <pre><code>int main() { char ftp[6]; char *name; char *pass; char *domain; char *url; char *var = "ftp://[coiso:pass@]teste/umgrandeurl"; int x; int size_name; int size_pass; int size_domain; int size_url; int flag = 0; for (x = 0; x &lt; strlen(var); x++) { if (x == 6) { strncpy(ftp, var, 6); if (strcmp(ftp, "ftp://") != 0) { } } if (var[x] == ':' &amp;&amp; x &gt; 3) { size_name = x - 7; name = (char *)malloc(size_name + 1); strncpy(name, &amp;var[7], size_name); } if (var[x] == '@') { size_pass = x - (8 + size_name); pass = (char *)malloc(size_pass + 1); strncpy(pass, &amp;var[8 + size_name], size_pass); } if (var[x] == '/' &amp;&amp; x &gt; 6 &amp;&amp; flag == 0) { flag = 1; size_domain = x - (10 + size_pass + size_name); domain = (char *)malloc(size_domain + 1); strncpy(domain, &amp;var[10 + size_pass + size_name], size_domain); } if (x == strlen(var) - 1) { size_url = x - (10 + size_pass + size_name + size_domain); url = domain = (char *)malloc(size_url + 1); strncpy(url, &amp;var[11 + size_pass + size_name + size_domain], size_url); printf("%d", size_url); } } return 0; } </code></pre> <p>EDIT: Well the same thing happens to me in the pass but it isn't because of the null char.</p>
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    1. COPossible duplicate: http://stackoverflow.com/questions/726122/best-ways-of-parsing-a-url-using-c
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    2. CORemember to leave place for null character at the end of a string.
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    3. COI sincerely hope this is for homework :) and you are NOT creating a production software with that code. Meanwhile the entire approach that you have is way way off.. you need to get the notion of strings in C. Serious tutorial on C strings is needed to help you.
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      1. USAhmed Masud
 

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