summaryrefslogtreecommitdiff
path: root/shell/ash.c
diff options
context:
space:
mode:
authorDenys Vlasenko <dvlasenk@redhat.com>2010-09-12 15:04:27 +0200
committerDenys Vlasenko <dvlasenk@redhat.com>2010-09-12 15:04:27 +0200
commit958581a8d9583da8b9df0b69123e0c3990f7b3ff (patch)
tree607ae2e4129235063fd0a6e270770f4533d20e99 /shell/ash.c
parent6040fe88f4f6286da781dc9196ede4c6be310a04 (diff)
downloadbusybox-w32-958581a8d9583da8b9df0b69123e0c3990f7b3ff.tar.gz
busybox-w32-958581a8d9583da8b9df0b69123e0c3990f7b3ff.tar.bz2
busybox-w32-958581a8d9583da8b9df0b69123e0c3990f7b3ff.zip
ash: shrink by folding an if check into setprompt; unindent big block
function old new delta setprompt_if - 66 +66 parseheredoc 126 124 -2 parsecmd 68 66 -2 redirect 1254 1249 -5 xxreadtoken 351 343 -8 readtoken1 3219 3204 -15 setprompt 62 - -62 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 0/5 up/down: 66/-94) Total: -28 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'shell/ash.c')
-rw-r--r--shell/ash.c315
1 files changed, 149 insertions, 166 deletions
diff --git a/shell/ash.c b/shell/ash.c
index b618a47f9..f631e3d25 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2433,12 +2433,13 @@ static const char *expandstr(const char *ps);
2433#endif 2433#endif
2434 2434
2435static void 2435static void
2436setprompt(int whichprompt) 2436setprompt_if(smallint do_set, int whichprompt)
2437{ 2437{
2438 const char *prompt; 2438 const char *prompt;
2439#if ENABLE_ASH_EXPAND_PRMT 2439 IF_ASH_EXPAND_PRMT(struct stackmark smark;)
2440 struct stackmark smark; 2440
2441#endif 2441 if (!do_set)
2442 return;
2442 2443
2443 needprompt = 0; 2444 needprompt = 0;
2444 2445
@@ -6022,9 +6023,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
6022 c = p[length]; 6023 c = p[length];
6023 if (c) { 6024 if (c) {
6024 if (!(c & 0x80) 6025 if (!(c & 0x80)
6025#if ENABLE_SH_MATH_SUPPORT 6026 IF_SH_MATH_SUPPORT(|| c == CTLENDARI)
6026 || c == CTLENDARI
6027#endif
6028 ) { 6027 ) {
6029 /* c == '=' || c == ':' || c == CTLENDARI */ 6028 /* c == '=' || c == ':' || c == CTLENDARI */
6030 length++; 6029 length++;
@@ -6107,8 +6106,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
6107#endif 6106#endif
6108 } 6107 }
6109 } 6108 }
6110 breakloop: 6109 breakloop: ;
6111 ;
6112} 6110}
6113 6111
6114static char * 6112static char *
@@ -11054,159 +11052,156 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
11054 STARTSTACKSTR(out); 11052 STARTSTACKSTR(out);
11055 loop: 11053 loop:
11056 /* For each line, until end of word */ 11054 /* For each line, until end of word */
11057 { 11055 CHECKEND(); /* set c to PEOF if at end of here document */
11058 CHECKEND(); /* set c to PEOF if at end of here document */ 11056 for (;;) { /* until end of line or end of word */
11059 for (;;) { /* until end of line or end of word */ 11057 CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */
11060 CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */ 11058 switch (SIT(c, syntax)) {
11061 switch (SIT(c, syntax)) { 11059 case CNL: /* '\n' */
11062 case CNL: /* '\n' */ 11060 if (syntax == BASESYNTAX)
11063 if (syntax == BASESYNTAX) 11061 goto endword; /* exit outer loop */
11064 goto endword; /* exit outer loop */ 11062 USTPUTC(c, out);
11065 USTPUTC(c, out); 11063 g_parsefile->linno++;
11066 g_parsefile->linno++; 11064 setprompt_if(doprompt, 2);
11067 if (doprompt) 11065 c = pgetc();
11068 setprompt(2); 11066 goto loop; /* continue outer loop */
11069 c = pgetc(); 11067 case CWORD:
11070 goto loop; /* continue outer loop */ 11068 USTPUTC(c, out);
11071 case CWORD: 11069 break;
11072 USTPUTC(c, out); 11070 case CCTL:
11073 break; 11071 if (eofmark == NULL || dblquote)
11074 case CCTL: 11072 USTPUTC(CTLESC, out);
11075 if (eofmark == NULL || dblquote)
11076 USTPUTC(CTLESC, out);
11077#if ENABLE_ASH_BASH_COMPAT 11073#if ENABLE_ASH_BASH_COMPAT
11078 if (c == '\\' && bash_dollar_squote) { 11074 if (c == '\\' && bash_dollar_squote) {
11079 c = decode_dollar_squote(); 11075 c = decode_dollar_squote();
11080 if (c & 0x100) { 11076 if (c & 0x100) {
11081 USTPUTC('\\', out); 11077 USTPUTC('\\', out);
11082 c = (unsigned char)c; 11078 c = (unsigned char)c;
11083 }
11084 } 11079 }
11080 }
11085#endif 11081#endif
11086 USTPUTC(c, out); 11082 USTPUTC(c, out);
11087 break; 11083 break;
11088 case CBACK: /* backslash */ 11084 case CBACK: /* backslash */
11089 c = pgetc_without_PEOA(); 11085 c = pgetc_without_PEOA();
11090 if (c == PEOF) { 11086 if (c == PEOF) {
11087 USTPUTC(CTLESC, out);
11088 USTPUTC('\\', out);
11089 pungetc();
11090 } else if (c == '\n') {
11091 setprompt_if(doprompt, 2);
11092 } else {
11093#if ENABLE_ASH_EXPAND_PRMT
11094 if (c == '$' && pssyntax) {
11091 USTPUTC(CTLESC, out); 11095 USTPUTC(CTLESC, out);
11092 USTPUTC('\\', out); 11096 USTPUTC('\\', out);
11093 pungetc(); 11097 }
11094 } else if (c == '\n') {
11095 if (doprompt)
11096 setprompt(2);
11097 } else {
11098#if ENABLE_ASH_EXPAND_PRMT
11099 if (c == '$' && pssyntax) {
11100 USTPUTC(CTLESC, out);
11101 USTPUTC('\\', out);
11102 }
11103#endif 11098#endif
11104 /* Backslash is retained if we are in "str" and next char isn't special */ 11099 /* Backslash is retained if we are in "str" and next char isn't special */
11105 if (dblquote 11100 if (dblquote
11106 && c != '\\' 11101 && c != '\\'
11107 && c != '`' 11102 && c != '`'
11108 && c != '$' 11103 && c != '$'
11109 && (c != '"' || eofmark != NULL) 11104 && (c != '"' || eofmark != NULL)
11110 ) { 11105 ) {
11111 USTPUTC(CTLESC, out); 11106 USTPUTC(CTLESC, out);
11112 USTPUTC('\\', out); 11107 USTPUTC('\\', out);
11113 }
11114 if (SIT(c, SQSYNTAX) == CCTL)
11115 USTPUTC(CTLESC, out);
11116 USTPUTC(c, out);
11117 quotef = 1;
11118 } 11108 }
11119 break; 11109 if (SIT(c, SQSYNTAX) == CCTL)
11120 case CSQUOTE: 11110 USTPUTC(CTLESC, out);
11121 syntax = SQSYNTAX; 11111 USTPUTC(c, out);
11112 quotef = 1;
11113 }
11114 break;
11115 case CSQUOTE:
11116 syntax = SQSYNTAX;
11122 quotemark: 11117 quotemark:
11123 if (eofmark == NULL) { 11118 if (eofmark == NULL) {
11124 USTPUTC(CTLQUOTEMARK, out); 11119 USTPUTC(CTLQUOTEMARK, out);
11120 }
11121 break;
11122 case CDQUOTE:
11123 syntax = DQSYNTAX;
11124 dblquote = 1;
11125 goto quotemark;
11126 case CENDQUOTE:
11127 IF_ASH_BASH_COMPAT(bash_dollar_squote = 0;)
11128 if (eofmark != NULL && arinest == 0
11129 && varnest == 0
11130 ) {
11131 USTPUTC(c, out);
11132 } else {
11133 if (dqvarnest == 0) {
11134 syntax = BASESYNTAX;
11135 dblquote = 0;
11125 } 11136 }
11126 break; 11137 quotef = 1;
11127 case CDQUOTE:
11128 syntax = DQSYNTAX;
11129 dblquote = 1;
11130 goto quotemark; 11138 goto quotemark;
11131 case CENDQUOTE: 11139 }
11132 IF_ASH_BASH_COMPAT(bash_dollar_squote = 0;) 11140 break;
11133 if (eofmark != NULL && arinest == 0 11141 case CVAR: /* '$' */
11134 && varnest == 0 11142 PARSESUB(); /* parse substitution */
11135 ) { 11143 break;
11136 USTPUTC(c, out); 11144 case CENDVAR: /* '}' */
11137 } else { 11145 if (varnest > 0) {
11138 if (dqvarnest == 0) { 11146 varnest--;
11139 syntax = BASESYNTAX; 11147 if (dqvarnest > 0) {
11140 dblquote = 0; 11148 dqvarnest--;
11141 }
11142 quotef = 1;
11143 goto quotemark;
11144 }
11145 break;
11146 case CVAR: /* '$' */
11147 PARSESUB(); /* parse substitution */
11148 break;
11149 case CENDVAR: /* '}' */
11150 if (varnest > 0) {
11151 varnest--;
11152 if (dqvarnest > 0) {
11153 dqvarnest--;
11154 }
11155 c = CTLENDVAR;
11156 } 11149 }
11157 USTPUTC(c, out); 11150 c = CTLENDVAR;
11158 break; 11151 }
11152 USTPUTC(c, out);
11153 break;
11159#if ENABLE_SH_MATH_SUPPORT 11154#if ENABLE_SH_MATH_SUPPORT
11160 case CLP: /* '(' in arithmetic */ 11155 case CLP: /* '(' in arithmetic */
11161 parenlevel++; 11156 parenlevel++;
11162 USTPUTC(c, out); 11157 USTPUTC(c, out);
11163 break; 11158 break;
11164 case CRP: /* ')' in arithmetic */ 11159 case CRP: /* ')' in arithmetic */
11165 if (parenlevel > 0) { 11160 if (parenlevel > 0) {
11166 parenlevel--; 11161 parenlevel--;
11167 } else { 11162 } else {
11168 if (pgetc() == ')') { 11163 if (pgetc() == ')') {
11169 if (--arinest == 0) { 11164 if (--arinest == 0) {
11170 syntax = prevsyntax; 11165 syntax = prevsyntax;
11171 dblquote = (syntax == DQSYNTAX); 11166 dblquote = (syntax == DQSYNTAX);
11172 c = CTLENDARI; 11167 c = CTLENDARI;
11173 }
11174 } else {
11175 /*
11176 * unbalanced parens
11177 * (don't 2nd guess - no error)
11178 */
11179 pungetc();
11180 } 11168 }
11169 } else {
11170 /*
11171 * unbalanced parens
11172 * (don't 2nd guess - no error)
11173 */
11174 pungetc();
11181 } 11175 }
11182 USTPUTC(c, out); 11176 }
11183 break; 11177 USTPUTC(c, out);
11178 break;
11184#endif 11179#endif
11185 case CBQUOTE: /* '`' */ 11180 case CBQUOTE: /* '`' */
11186 PARSEBACKQOLD(); 11181 PARSEBACKQOLD();
11187 break; 11182 break;
11188 case CENDFILE: 11183 case CENDFILE:
11189 goto endword; /* exit outer loop */ 11184 goto endword; /* exit outer loop */
11190 case CIGN: 11185 case CIGN:
11191 break; 11186 break;
11192 default: 11187 default:
11193 if (varnest == 0) { 11188 if (varnest == 0) {
11194#if ENABLE_ASH_BASH_COMPAT 11189#if ENABLE_ASH_BASH_COMPAT
11195 if (c == '&') { 11190 if (c == '&') {
11196 if (pgetc() == '>') 11191 if (pgetc() == '>')
11197 c = 0x100 + '>'; /* flag &> */ 11192 c = 0x100 + '>'; /* flag &> */
11198 pungetc(); 11193 pungetc();
11199 }
11200#endif
11201 goto endword; /* exit outer loop */
11202 } 11194 }
11203 IF_ASH_ALIAS(if (c != PEOA)) 11195#endif
11204 USTPUTC(c, out); 11196 goto endword; /* exit outer loop */
11205 } 11197 }
11206 c = pgetc_fast(); 11198 IF_ASH_ALIAS(if (c != PEOA))
11207 } /* for (;;) */ 11199 USTPUTC(c, out);
11208 } 11200 }
11201 c = pgetc_fast();
11202 } /* for (;;) */
11209 endword: 11203 endword:
11204
11210#if ENABLE_SH_MATH_SUPPORT 11205#if ENABLE_SH_MATH_SUPPORT
11211 if (syntax == ARISYNTAX) 11206 if (syntax == ARISYNTAX)
11212 raise_error_syntax("missing '))'"); 11207 raise_error_syntax("missing '))'");
@@ -11542,16 +11537,14 @@ parsebackq: {
11542 treatment to some slashes, and then push the string and 11537 treatment to some slashes, and then push the string and
11543 reread it as input, interpreting it normally. */ 11538 reread it as input, interpreting it normally. */
11544 char *pout; 11539 char *pout;
11545 int pc;
11546 size_t psavelen; 11540 size_t psavelen;
11547 char *pstr; 11541 char *pstr;
11548 11542
11549
11550 STARTSTACKSTR(pout); 11543 STARTSTACKSTR(pout);
11551 for (;;) { 11544 for (;;) {
11552 if (needprompt) { 11545 int pc;
11553 setprompt(2); 11546
11554 } 11547 setprompt_if(needprompt, 2);
11555 pc = pgetc(); 11548 pc = pgetc();
11556 switch (pc) { 11549 switch (pc) {
11557 case '`': 11550 case '`':
@@ -11561,8 +11554,7 @@ parsebackq: {
11561 pc = pgetc(); 11554 pc = pgetc();
11562 if (pc == '\n') { 11555 if (pc == '\n') {
11563 g_parsefile->linno++; 11556 g_parsefile->linno++;
11564 if (doprompt) 11557 setprompt_if(doprompt, 2);
11565 setprompt(2);
11566 /* 11558 /*
11567 * If eating a newline, avoid putting 11559 * If eating a newline, avoid putting
11568 * the newline into the new character 11560 * the newline into the new character
@@ -11725,9 +11717,7 @@ xxreadtoken(void)
11725 tokpushback = 0; 11717 tokpushback = 0;
11726 return lasttoken; 11718 return lasttoken;
11727 } 11719 }
11728 if (needprompt) { 11720 setprompt_if(needprompt, 2);
11729 setprompt(2);
11730 }
11731 startlinno = g_parsefile->linno; 11721 startlinno = g_parsefile->linno;
11732 for (;;) { /* until token or start of word found */ 11722 for (;;) { /* until token or start of word found */
11733 c = pgetc_fast(); 11723 c = pgetc_fast();
@@ -11744,8 +11734,7 @@ xxreadtoken(void)
11744 break; /* return readtoken1(...) */ 11734 break; /* return readtoken1(...) */
11745 } 11735 }
11746 startlinno = ++g_parsefile->linno; 11736 startlinno = ++g_parsefile->linno;
11747 if (doprompt) 11737 setprompt_if(doprompt, 2);
11748 setprompt(2);
11749 } else { 11738 } else {
11750 const char *p; 11739 const char *p;
11751 11740
@@ -11791,9 +11780,7 @@ xxreadtoken(void)
11791 tokpushback = 0; 11780 tokpushback = 0;
11792 return lasttoken; 11781 return lasttoken;
11793 } 11782 }
11794 if (needprompt) { 11783 setprompt_if(needprompt, 2);
11795 setprompt(2);
11796 }
11797 startlinno = g_parsefile->linno; 11784 startlinno = g_parsefile->linno;
11798 for (;;) { /* until token or start of word found */ 11785 for (;;) { /* until token or start of word found */
11799 c = pgetc_fast(); 11786 c = pgetc_fast();
@@ -11809,8 +11796,7 @@ xxreadtoken(void)
11809 case '\\': 11796 case '\\':
11810 if (pgetc() == '\n') { 11797 if (pgetc() == '\n') {
11811 startlinno = ++g_parsefile->linno; 11798 startlinno = ++g_parsefile->linno;
11812 if (doprompt) 11799 setprompt_if(doprompt, 2);
11813 setprompt(2);
11814 continue; 11800 continue;
11815 } 11801 }
11816 pungetc(); 11802 pungetc();
@@ -11936,8 +11922,7 @@ parsecmd(int interact)
11936 11922
11937 tokpushback = 0; 11923 tokpushback = 0;
11938 doprompt = interact; 11924 doprompt = interact;
11939 if (doprompt) 11925 setprompt_if(doprompt, doprompt);
11940 setprompt(doprompt);
11941 needprompt = 0; 11926 needprompt = 0;
11942 t = readtoken(); 11927 t = readtoken();
11943 if (t == TEOF) 11928 if (t == TEOF)
@@ -11961,10 +11946,8 @@ parseheredoc(void)
11961 heredoclist = NULL; 11946 heredoclist = NULL;
11962 11947
11963 while (here) { 11948 while (here) {
11964 if (needprompt) { 11949 setprompt_if(needprompt, 2);
11965 setprompt(2); 11950 readtoken1(pgetc(), here->here->type == NHERE ? SQSYNTAX : DQSYNTAX,
11966 }
11967 readtoken1(pgetc(), here->here->type == NHERE? SQSYNTAX : DQSYNTAX,
11968 here->eofmark, here->striptabs); 11951 here->eofmark, here->striptabs);
11969 n = stzalloc(sizeof(struct narg)); 11952 n = stzalloc(sizeof(struct narg));
11970 n->narg.type = NARG; 11953 n->narg.type = NARG;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-17 02:37:58 +0000