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NSH: Add support for while-do-done and until-do-done loops

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This commit is contained in:
Gregory Nutt
2014-01-17 15:56:32 -06:00
parent 97e1d8b535
commit cfb7c77ed3
6 changed files with 423 additions and 54 deletions
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17
nshlib/nsh_script.c
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@@ -132,6 +132,23 @@ int nsh_script(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd,
/* Get the next line of input from the file */
fflush(stdout);
/* Get the current file position. This is used to control
* looping. If a loop begins in the next line, then this file
* offset will be needed to locate the top of the loop in the
* script file. Note that ftell will return -1 on failure.
*/
vtbl->np.np_foffs = ftell(vtbl->np.np_stream);
vtbl->np.np_loffs = 0;
if (vtbl->np.np_foffs < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, "loop", "ftell", NSH_ERRNO);
}
/* Now read the next line from the script file */
pret = fgets(buffer, CONFIG_NSH_LINELEN, vtbl->np.np_stream);
if (pret)
{