mirror of /home/gitosis/repositories/libowfat.git
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commit
81e832ddf9
4 changed files with 74 additions and 6 deletions
@ -0,0 +1,41 @@ |
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#include "fmt.h" |
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#include "textcode.h" |
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|
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unsigned int fmt_yenc(char* dest,const char* src,unsigned int len) { |
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register const unsigned char* s=(const unsigned char*) src; |
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unsigned long written=0,i; |
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int linelen=0; |
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for (i=0; i<len; ++i) { |
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unsigned char c=s[i]+42; |
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switch (c) { |
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case ' ': /* escape space at line ending */ |
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if (linelen==253) { |
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if (dest) dest[written]='\n'; ++written; linelen=0; |
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} |
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goto dontescape; |
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case 'F': /* escape "^From " */ |
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if (s[i+1]+42!='r' || s[i+2]+42!='o' || s[i+3]+42!='m' || s[i+4]+42!=' ') goto dontescape; |
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case '.': /* dot at start of line needs to be escaped */ |
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if (!linelen) goto dontescape; |
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/* fall through */ |
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case 0: |
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case '\n': |
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case '\r': |
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case '=': |
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if (dest) dest[written]='='; ++written; |
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c+=64; |
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/* fall through */ |
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default: |
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dontescape: |
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++linelen; |
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if (dest) dest[written]=c; ++written; |
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if (linelen>253) { |
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if (dest) dest[written]='\n'; ++written; linelen=0; |
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} |
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} |
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} |
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if (linelen) { |
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if (dest) dest[written]='\n'; ++written; linelen=0; |
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} |
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return written; |
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} |
@ -0,0 +1,20 @@ |
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#include "fmt.h" |
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#include "textcode.h" |
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|
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unsigned int scan_yenc(const char *src,char *dest,unsigned int *destlen) { |
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register const unsigned char* s=(const unsigned char*) src; |
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unsigned long written=0,i; |
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for (i=0; s[i]; ++i) { |
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if (s[i]=='=') { |
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++i; |
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if (s[i]=='y') break; |
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dest[written]=s[i]-64-42; |
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} else if (s[i]=='\n' || s[i]=='\r' || s[i]=='\0') |
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break; |
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else |
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dest[written]=s[i]-42; |
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++written; |
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} |
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*destlen=written; |
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return i; |
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} |
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