apache/nuttx-apps
1
0
Fork 0
mirror of https://github.com/apache/nuttx-apps.git synced 2025-10-20 12:55:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

NSH: Add a break command; if-then-else and looping behavior can not be configured out of the build for small systems that need minimal scripting capability

Browse Source
This commit is contained in:
Gregory Nutt
2014-01-18 09:39:16 -06:00
parent 45121c8709
commit 612d8ed14c
7 changed files with 149 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
nshlib/nsh.h
View File

@@ -453,6 +453,8 @@
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_ITEF
/* State when parsing and if-then-else sequence */
enum nsh_itef_e
@@ -472,7 +474,9 @@ struct nsh_itef_s
uint8_t ie_unused : 4;
uint8_t ie_state : 2; /* If-then-else state (see enum nsh_itef_e) */
};
#endif
#ifndef CONFIG_NSH_DISABLE_LOOPS
/* State when parsing and while-do-done or until-do-done sequence */
enum nsh_lp_e
@@ -490,8 +494,12 @@ struct nsh_loop_s
uint8_t lp_enable : 1; /* Loop command processing is enabled */
uint8_t lp_unused : 5;
uint8_t lp_state : 2; /* Loop state (see enume nsh_lp_e) */
#ifndef CONFIG_NSH_DISABLE_ITEF
uint8_t lp_iendx; /* Saved if-then-else-fi index */
#endif
long lp_topoffs; /* Top of loop file offset */
};
#endif
/* These structure provides the overall state of the parser */
@@ -510,19 +518,27 @@ struct nsh_parser_s
#ifndef CONFIG_NSH_DISABLESCRIPT
FILE *np_stream; /* Stream of current script */
#ifndef CONFIG_NSH_DISABLE_LOOPS
long np_foffs; /* File offset to the beginning of a line */
#ifndef NSH_DISABLE_SEMICOLON
uint16_t np_loffs; /* Byte offset to the beginning of a command */
bool np_jump; /* "Jump" to the top of the loop */
#endif
uint8_t np_iendx; /* Current index into np_iestate[] */
uint8_t np_lpndx; /* Current index into np_lpstate[] */
#endif
#ifndef CONFIG_NSH_DISABLE_ITEF
uint8_t np_iendx; /* Current index into np_iestate[] */
#endif
/* This is a stack of parser state information. */
#ifndef CONFIG_NSH_DISABLE_ITEF
struct nsh_itef_s np_iestate[CONFIG_NSH_NESTDEPTH];
#endif
#ifndef CONFIG_NSH_DISABLE_LOOPS
struct nsh_loop_s np_lpstate[CONFIG_NSH_NESTDEPTH];
#endif
#endif
};
struct nsh_vtbl_s; /* Defined in nsh_console.h */
@@ -643,6 +659,9 @@ void nsh_usbtrace(void);
/* Shell command handlers */
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_LOOPS)
int cmd_break(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif
#ifndef CONFIG_NSH_DISABLE_ECHO
int cmd_echo(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif