libcm is a C development framework with an emphasis on audio signal processing applications.
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  1. #include "cmPrefix.h"
  2. #include "cmGlobal.h"
  3. #include "cmRpt.h"
  4. #include "cmErr.h"
  5. #include "cmCtx.h"
  6. #include "cmMem.h"
  7. #include "cmMallocDebug.h"
  8. #include "cmLinkedHeap.h"
  9. #include "cmText.h"
  10. #include "cmFloatTypes.h"
  11. #include "cmVectOps.h"
  12. typedef struct cmTextSys_str
  13. {
  14. cmErr_t err;
  15. cmLHeapH_t lhH;
  16. cmChar_t* buf;
  17. } cmTextSys_t;
  18. cmTextSysH_t cmTextSysNullHandle = cmSTATIC_NULL_HANDLE;
  19. cmTextSysH_t _cmTextSysGlobalH = cmSTATIC_NULL_HANDLE;
  20. cmTextSys_t* _cmTextSysHandleToPtr( cmTextSysH_t h )
  21. {
  22. cmTextSys_t* p = (cmTextSys_t*)h.h;
  23. assert(p != NULL);
  24. return p;
  25. }
  26. cmTxRC_t _cmTextSysFinalize( cmTextSys_t* p )
  27. {
  28. cmTxRC_t rc = kOkTxRC;
  29. if( cmLHeapIsValid(p->lhH) )
  30. cmLHeapDestroy(&p->lhH);
  31. cmMemFree(p->buf);
  32. cmMemFree(p);
  33. return rc;
  34. }
  35. cmTxRC_t cmTextSysInitialize( cmCtx_t* ctx, cmTextSysH_t* hp )
  36. {
  37. cmTxRC_t rc;
  38. if((rc = cmTextSysFinalize(hp)) != kOkTxRC )
  39. return rc;
  40. cmTextSys_t* p = cmMemAllocZ(cmTextSys_t,1);
  41. cmErrSetup(&p->err,&ctx->rpt,"Text System");
  42. if( cmLHeapIsValid( p->lhH = cmLHeapCreate( 8192, ctx )) == false )
  43. {
  44. rc = cmErrMsg(&p->err,kLHeapFailTxRC,"Linked Heap create failed.");
  45. goto errLabel;
  46. }
  47. hp->h = p;
  48. errLabel:
  49. return rc;
  50. }
  51. cmTxRC_t cmTextSysFinalize( cmTextSysH_t* hp )
  52. {
  53. cmTxRC_t rc = kOkTxRC;
  54. if( hp == NULL || cmTextSysIsValid(*hp)==false )
  55. return kOkTxRC;
  56. cmTextSys_t* p = _cmTextSysHandleToPtr(*hp);
  57. if((rc = _cmTextSysFinalize(p)) == kOkTxRC )
  58. {
  59. hp->h = NULL;
  60. }
  61. return rc;
  62. }
  63. bool cmTextSysIsValid( cmTextSysH_t h )
  64. { return h.h != NULL; }
  65. cmChar_t* _cmTextSysVPrintf( cmTextSysH_t h, cmLHeapH_t lhH, bool staticFl, const cmChar_t* fmt, va_list vl )
  66. {
  67. va_list vl1;
  68. va_copy(vl1,vl);
  69. cmTextSys_t* p = cmLHeapIsValid(lhH) ? NULL : _cmTextSysHandleToPtr(h);
  70. unsigned n = vsnprintf(NULL,0,fmt,vl);
  71. cmChar_t* s = NULL;
  72. if( staticFl )
  73. s = p->buf = cmMemResize(cmChar_t,p->buf,n+1);
  74. else
  75. s = cmLhAllocZ(cmLHeapIsValid(lhH) ? lhH : p->lhH,cmChar_t,n+1);
  76. unsigned m = vsnprintf(s,n+1,fmt,vl1);
  77. assert(m==n);
  78. s[n] = 0;
  79. va_end(vl1);
  80. return s;
  81. }
  82. cmChar_t* cmTextSysVPrintfH( cmLHeapH_t lhH, const cmChar_t* fmt, va_list vl )
  83. { return _cmTextSysVPrintf( cmTextSysNullHandle, lhH, false, fmt, vl ); }
  84. cmChar_t* cmTextSysPrintfH( cmLHeapH_t lhH, const cmChar_t* fmt, ... )
  85. {
  86. va_list vl;
  87. va_start( vl, fmt );
  88. cmChar_t* s = cmTextSysVPrintfH(lhH,fmt,vl);
  89. va_end(vl);
  90. return s;
  91. }
  92. cmChar_t* cmTextSysVPrintfS( cmTextSysH_t h, const cmChar_t* fmt, va_list vl )
  93. { return _cmTextSysVPrintf(h,cmLHeapNullHandle,true,fmt,vl); }
  94. cmChar_t* cmTextSysPrintfS( cmTextSysH_t h, const cmChar_t* fmt, ... )
  95. {
  96. va_list vl;
  97. va_start(vl,fmt);
  98. cmChar_t* s = cmTextSysVPrintfS(h,fmt,vl);
  99. va_end(vl);
  100. return s;
  101. }
  102. cmChar_t* cmTextSysVPrintf( cmTextSysH_t h, const cmChar_t* fmt, va_list vl )
  103. { return _cmTextSysVPrintf(h,cmLHeapNullHandle,false,fmt,vl); }
  104. cmChar_t* cmTextSysPrintf( cmTextSysH_t h, const cmChar_t* fmt, ... )
  105. {
  106. va_list vl;
  107. va_start(vl,fmt);
  108. cmChar_t* s = cmTextSysVPrintf(h,fmt,vl);
  109. va_end(vl);
  110. return s;
  111. }
  112. void cmTextSysFreeStr( cmTextSysH_t h, const cmChar_t* s )
  113. {
  114. cmTextSys_t* p = _cmTextSysHandleToPtr(h);
  115. cmLhFree(p->lhH,(cmChar_t*)s);
  116. }
  117. bool cmTextSysIsStored(cmTextSysH_t h, const cmChar_t* s )
  118. {
  119. cmTextSys_t* p = _cmTextSysHandleToPtr(h);
  120. return cmLHeapIsPtrInHeap(p->lhH,s);
  121. }
  122. //
  123. // Global interface
  124. //
  125. cmTxRC_t cmTsInitialize( cmCtx_t* ctx )
  126. { return cmTextSysInitialize(ctx,&_cmTextSysGlobalH); }
  127. cmTxRC_t cmTsFinalize()
  128. { return cmTextSysFinalize(&_cmTextSysGlobalH); }
  129. bool cmTsIsValid()
  130. { return cmTextSysIsValid(_cmTextSysGlobalH); }
  131. cmChar_t* cmTsVPrintfS( const cmChar_t* fmt, va_list vl )
  132. { return cmTextSysVPrintfS(_cmTextSysGlobalH,fmt,vl); }
  133. cmChar_t* cmTsPrintfS( const cmChar_t* fmt, ... )
  134. {
  135. va_list vl;
  136. va_start(vl,fmt);
  137. cmChar_t* s = cmTsVPrintfS(fmt,vl);
  138. va_end(vl);
  139. return s;
  140. }
  141. cmChar_t* cmTsVPrintfH( cmLHeapH_t h, const cmChar_t* fmt, va_list vl )
  142. { return cmTextSysVPrintfH(h,fmt,vl); }
  143. cmChar_t* cmTsPrintfH( cmLHeapH_t h, const cmChar_t* fmt, ... )
  144. {
  145. va_list vl;
  146. va_start(vl,fmt);
  147. cmChar_t* s = cmTsVPrintfH(h,fmt,vl);
  148. va_end(vl);
  149. return s;
  150. }
  151. cmChar_t* cmTsVPrintf( const cmChar_t* fmt, va_list vl )
  152. { return cmTextSysVPrintf(_cmTextSysGlobalH,fmt,vl); }
  153. cmChar_t* cmTsPrintf( const cmChar_t* fmt, ... )
  154. {
  155. va_list vl;
  156. va_start(vl,fmt);
  157. cmChar_t* s = cmTsVPrintf(fmt,vl);
  158. va_end(vl);
  159. return s;
  160. }
  161. void cmTsFreeStr( const cmChar_t* s )
  162. { cmTextSysFreeStr(_cmTextSysGlobalH,s); }
  163. bool cmTsIsStored( const cmChar_t* s )
  164. { return cmTextSysIsStored(_cmTextSysGlobalH,s); }
  165. cmChar_t* cmTsVPrintfP( cmChar_t* s, const cmChar_t* fmt, va_list vl )
  166. {
  167. va_list vl1;
  168. va_copy(vl1,vl);
  169. int n = vsnprintf(NULL,0,fmt,vl);
  170. assert(n != -1);
  171. s = cmMemResize(cmChar_t,s,n+1);
  172. unsigned m = vsnprintf(s,n+1,fmt,vl1);
  173. assert(m==n);
  174. s[n] = 0;
  175. return s;
  176. }
  177. cmChar_t* cmTsPrintfP( cmChar_t* s, const cmChar_t* fmt, ... )
  178. {
  179. va_list vl;
  180. va_start(vl,fmt);
  181. s = cmTsVPrintfP(s,fmt,vl);
  182. va_end(vl);
  183. return s;
  184. }
  185. void _cmTxError( cmErr_t* err, cmTxRC_t rc, const char* fmt, ... )
  186. {
  187. va_list vl;
  188. va_start(vl,fmt);
  189. cmErrVMsg(err,rc,fmt,vl);
  190. va_end(vl);
  191. }
  192. cmTxRC_t _cmTxRptError( cmErr_t* err, const char* msg, const char* inputText )
  193. {
  194. if( err == NULL )
  195. return kOkTxRC;
  196. if( inputText == NULL )
  197. {
  198. _cmTxError(err,kNullTxRC,"Text to %s conversion failed due to NULL input text.");
  199. return kNullTxRC;
  200. }
  201. if( errno != 0 )
  202. {
  203. _cmTxError(err,kCvtErrTxRC,"Text to %s conversion failed on input '%s'.",msg,inputText);
  204. return kCvtErrTxRC;
  205. }
  206. return kOkTxRC;
  207. }
  208. cmTxRC_t cmTextToInt(const char* text, int* vp, cmErr_t* err )
  209. {
  210. assert( vp != NULL );
  211. cmTxRC_t rc = kOkTxRC;
  212. int en = errno;
  213. errno = 0;
  214. *vp = text==NULL ? 0 : strtol(text,NULL,0);
  215. rc = _cmTxRptError(err,"integer",text);
  216. errno = en;
  217. return rc;
  218. }
  219. cmTxRC_t cmTextToUInt( const char* text, unsigned* vp, cmErr_t* err )
  220. {
  221. assert( vp != NULL );
  222. cmTxRC_t rc = kOkTxRC;
  223. int en = errno;
  224. errno = 0;
  225. *vp = text==NULL ? 0 : (unsigned)strtol(text,NULL,0);
  226. rc = _cmTxRptError(err,"unsigned integer",text);
  227. errno = en;
  228. return rc;
  229. }
  230. cmTxRC_t cmTextToFloat( const char* text, float* vp, cmErr_t* err )
  231. {
  232. assert( vp != NULL );
  233. cmTxRC_t rc = kOkTxRC;
  234. int en = errno;
  235. errno = 0;
  236. *vp = text==NULL ? 0 : (float)strtod(text,NULL);
  237. rc = _cmTxRptError(err,"float",text);
  238. errno = en;
  239. return rc;
  240. }
  241. cmTxRC_t cmTextToDouble( const char* text, double* vp, cmErr_t* err )
  242. {
  243. assert( vp != NULL );
  244. cmTxRC_t rc = kOkTxRC;
  245. int en = errno;
  246. errno = 0;
  247. *vp = text==NULL ? 0 : strtod(text,NULL);
  248. rc = _cmTxRptError(err,"double",text);
  249. errno = en;
  250. return rc;
  251. }
  252. cmTxRC_t cmTextToBool( const char* text, bool* vp, cmErr_t* err )
  253. {
  254. assert( vp != NULL );
  255. cmTxRC_t rc = kOkTxRC;
  256. if( strcasecmp(text,"true") == 0 || strcasecmp(text,"0") == 0 )
  257. *vp = true;
  258. else
  259. if( strcasecmp(text,"false") == 0 || strcasecmp(text,"1") == 0 )
  260. *vp = false;
  261. else
  262. rc = _cmTxRptError(err,"bool",text);
  263. return rc;
  264. }
  265. cmChar_t* cmTextNextNonWhiteOrEos( cmChar_t* s )
  266. {
  267. assert( s != NULL );
  268. while( (*s) && isspace(*s) )
  269. ++s;
  270. return s;
  271. }
  272. const cmChar_t* cmTextNextNonWhiteOrEosC( const cmChar_t* s )
  273. { return cmTextNextNonWhiteOrEos((cmChar_t*)s); }
  274. cmChar_t* cmTextNextNonWhite( cmChar_t* s )
  275. { //return (*(s=cmTextNextNonWhiteOrEos(s))) == 0 ? NULL : s;
  276. s=cmTextNextNonWhiteOrEos(s);
  277. if( *s == 0 )
  278. return NULL;
  279. return s;
  280. }
  281. const cmChar_t* cmTextNextNonWhiteC( const cmChar_t* s )
  282. { return cmTextNextNonWhite((cmChar_t*)s); }
  283. cmChar_t* cmTextPrevNonWhiteOrBos( cmChar_t* s0, const cmChar_t* s1 )
  284. {
  285. assert( s0!=NULL && s1!=NULL && s0 <= s1 );
  286. for(; s0 < s1; --s1 )
  287. if( !isspace(*s1) )
  288. break;
  289. return (cmChar_t*)s1;
  290. }
  291. const cmChar_t* cmTextPrevNonWhiteOrBosC( const cmChar_t* s0, const cmChar_t* s1 )
  292. { return cmTextPrevNonWhiteOrBos((cmChar_t*)s0,s1); }
  293. cmChar_t* cmTextPrevNonWhite( cmChar_t* s0, const cmChar_t* s1 )
  294. {
  295. cmChar_t* s2;
  296. if((s2 = cmTextPrevNonWhiteOrBos(s0,s1)) == s0 )
  297. return NULL;
  298. return s2;
  299. }
  300. const cmChar_t* cmTextPrevNonWhiteC( const cmChar_t* s0, const cmChar_t* s1 )
  301. { return cmTextPrevNonWhite((cmChar_t*)s0,s1); }
  302. cmChar_t* cmTextNextWhiteOrEos( cmChar_t* s )
  303. {
  304. assert( s!=NULL);
  305. while(*s && !isspace(*s) )
  306. ++s;
  307. return s;
  308. }
  309. const cmChar_t* cmTextNextWhiteOrEosC( const cmChar_t* s )
  310. { return cmTextNextWhiteOrEos((cmChar_t*)s); }
  311. cmChar_t* cmTextNextWhite( cmChar_t* s )
  312. { return (*(s=cmTextNextWhiteOrEos(s)))!=0 ? s : NULL; }
  313. const cmChar_t* cmTextNextWhiteC( const cmChar_t* s )
  314. { return cmTextNextWhite((cmChar_t*)s); }
  315. cmChar_t* cmTextPrevWhiteOrBos( cmChar_t* s0, const cmChar_t* s1 )
  316. {
  317. assert( s0!=NULL && s1!=NULL && s0 <= s1 );
  318. while( s1>s0 && !isspace(*s1) )
  319. --s1;
  320. return (cmChar_t*)s1;
  321. }
  322. const cmChar_t* cmTextPrevWhiteOrBosC( const cmChar_t* s0, const cmChar_t* s1 )
  323. { return cmTextPrevWhiteOrBos((cmChar_t*)s0,s1); }
  324. cmChar_t* cmTextPrevWhite( cmChar_t* s0, const cmChar_t* s1 )
  325. {
  326. cmChar_t* s2;
  327. if((s2 = cmTextPrevWhiteOrBos(s0,s1)) == s0 )
  328. return NULL;
  329. return s2;
  330. }
  331. const cmChar_t* cmTextPrevWhiteC( const cmChar_t* s0, const cmChar_t* s1 )
  332. { return cmTextPrevWhite((cmChar_t*)s0,s1); }
  333. cmChar_t* cmTextBegOfLine( cmChar_t* s0, const cmChar_t* s1 )
  334. {
  335. assert( s1!=NULL && s0!=NULL && s1 >= s0 );
  336. if( s0 == s1 )
  337. return s0;
  338. --s1;
  339. while( s1>s0 && *s1 != '\n' )
  340. --s1;
  341. if( *s1 == '\n' )
  342. ++s1;
  343. return (cmChar_t*)s1;
  344. }
  345. const cmChar_t* cmTextBegOfLineC( const cmChar_t* s0, const cmChar_t* s1 )
  346. { return cmTextBegOfLine((cmChar_t*)s0,s1); }
  347. cmChar_t* cmTextEndOfLine( cmChar_t* s )
  348. {
  349. assert( s!=NULL);
  350. while( *s!=0 && *s != '\n' )
  351. ++s;
  352. return s;
  353. }
  354. const cmChar_t* cmTextEndOfLineC( const cmChar_t* s )
  355. { return cmTextEndOfLine((cmChar_t*)s); }
  356. cmChar_t* cmTextLastNonWhiteChar( const cmChar_t* s )
  357. {
  358. unsigned n;
  359. if(s==NULL || (n = strlen(s)) == 0 )
  360. return NULL;
  361. cmChar_t* s0 = (cmChar_t*)s + n-1;
  362. for(; s0>=s; --s0)
  363. if( !isspace(*s0) )
  364. return s0;
  365. return NULL;
  366. }
  367. const cmChar_t* cmTextLastNonWhiteCharC( const cmChar_t* s )
  368. { return cmTextLastNonWhiteChar(s); }
  369. void cmTextShrinkS( cmChar_t* s, const cmChar_t* t, unsigned tn )
  370. { cmVOC_Shrink(s,strlen(s)+1,t,tn); }
  371. void cmTextShrinkSN(cmChar_t* s, unsigned sn, const cmChar_t* t, unsigned tn )
  372. { cmVOC_Shrink(s,sn,t,tn); }
  373. void cmTextClip( cmChar_t* s, unsigned n )
  374. {
  375. if( n == 0 || s == NULL || strlen(s)==0 )
  376. return;
  377. if( n >= strlen(s) )
  378. {
  379. s[0]=0;
  380. return;
  381. }
  382. s[ strlen(s)-n ] = 0;
  383. }
  384. cmChar_t* cmTextExpandS( cmChar_t* s, const cmChar_t* t, unsigned tn )
  385. { return cmVOC_Expand(s,strlen(s)+1,t,tn); }
  386. cmChar_t* cmTextReplaceSN( cmChar_t* s, const cmChar_t* t, unsigned tn, const cmChar_t* u, unsigned un )
  387. {
  388. unsigned n = strlen(s)+1;
  389. return cmVOC_Replace(s,&n,t,tn,u,un);
  390. }
  391. cmChar_t* cmTextReplaceS( cmChar_t* s, const cmChar_t* t, unsigned tn, const cmChar_t* u )
  392. { return cmTextReplaceSN(s,t,tn,u,u==NULL ? 0 : strlen(u)); }
  393. cmChar_t* _cmTextReplace( cmChar_t* s, const cmChar_t* t, const cmChar_t* u, unsigned n )
  394. {
  395. // we will go into an endless loop if 't' is contained in 'u' and n > 1.
  396. //assert( s!= NULL && t!=NULL && u!=NULL && (n==1 || strstr(u,t) == NULL) );
  397. assert( s!= NULL && t!=NULL && u!=NULL );
  398. int tn = strlen(t);
  399. cmChar_t* c = NULL;
  400. unsigned i = 0;
  401. cmChar_t* s0 = s;
  402. while( (c = strstr(s0,t)) != NULL )
  403. {
  404. int offs = c - s;
  405. s = cmTextReplaceS(s,c,tn,u);
  406. assert(s!=NULL);
  407. s0 = s + offs + tn;
  408. ++i;
  409. if( n!=cmInvalidCnt && i>=n)
  410. break;
  411. };
  412. return s;
  413. }
  414. cmChar_t* cmTextReplaceAll( cmChar_t* s, const cmChar_t* t, const cmChar_t* u )
  415. { return _cmTextReplace(s,t,u,cmInvalidCnt); }
  416. cmChar_t* cmTextReplaceFirst( cmChar_t* s, const cmChar_t* t, const cmChar_t* u )
  417. { return _cmTextReplace(s,t,u,1); }
  418. cmChar_t* cmTextInsertSN( cmChar_t* s, const cmChar_t* t, const cmChar_t* u, unsigned un )
  419. {
  420. unsigned n = strlen(s)+1;
  421. return cmVOC_Replace(s,&n,t,0,u,un);
  422. }
  423. cmChar_t* cmTextInsertS( cmChar_t* s, const cmChar_t* t, const cmChar_t* u )
  424. { return cmTextInsertSN(s,t,u,u==NULL?0:strlen(u)); }
  425. cmChar_t* cmTextAppend( cmChar_t* s, unsigned* sn, const cmChar_t* u, unsigned un )
  426. { return cmVOC_Replace(s,sn,s+(*sn),0,u,un); }
  427. cmChar_t* cmTextAppendSN( cmChar_t* s, const cmChar_t* u, unsigned un )
  428. {
  429. unsigned sn = s==NULL ? 0 : strlen(s);
  430. if( un > 0 )
  431. {
  432. s = cmTextAppend(s,&sn,u,un+1);
  433. s[sn-1] = 0;
  434. }
  435. return s;
  436. }
  437. // append u[un] to s[] and append terminating zero.
  438. cmChar_t* cmTextAppendSNZ( cmChar_t* s, const cmChar_t* u, unsigned un )
  439. {
  440. unsigned sn = s==NULL ? 0 : strlen(s)+1;
  441. cmChar_t z = 0;
  442. s = cmTextAppend(s,&sn,u,un);
  443. return cmTextAppend(s,&sn,&z,1);
  444. }
  445. // both s[] and u[] are strz's
  446. cmChar_t* cmTextAppendSS( cmChar_t* s, const cmChar_t* u )
  447. { return cmTextAppendSN(s,u,strlen(u)); }
  448. cmChar_t* cmTextVAppendSS( cmChar_t* s, ... )
  449. {
  450. va_list vl;
  451. va_start(vl,s);
  452. do
  453. {
  454. cmChar_t* s0 = va_arg(vl,cmChar_t*);
  455. if( s0 == NULL )
  456. break;
  457. s = cmTextAppendSS(s,s0);
  458. }while(1);
  459. va_end(vl);
  460. return s;
  461. }
  462. cmChar_t* cmTextAppendChar( cmChar_t* s, cmChar_t c, unsigned n )
  463. {
  464. if( n <= 0 )
  465. return s;
  466. cmChar_t t[ n+1 ];
  467. memset(t,' ',n);
  468. t[n] = 0;
  469. return cmTextAppendSS(s,t);
  470. }
  471. bool cmTextIsEmpty( const cmChar_t* s )
  472. {
  473. if( s!=NULL )
  474. for(; *s; ++s )
  475. if( !isspace(*s) )
  476. return false;
  477. return true;
  478. }
  479. bool cmTextIsNotEmpty( const cmChar_t* s )
  480. { return !cmTextIsEmpty(s); }
  481. unsigned cmTextLength( const cmChar_t* s0 )
  482. {
  483. if( s0 == NULL )
  484. return 0;
  485. return strlen(s0);
  486. }
  487. int cmTextCmp( const cmChar_t* s0, const cmChar_t* s1 )
  488. {
  489. if( s0 == NULL && s1 == NULL )
  490. return 0;
  491. if( s0 == NULL || s1 == NULL )
  492. {
  493. if( s0 == NULL )
  494. return -1;
  495. return 1;
  496. }
  497. return strcmp(s0,s1);
  498. }
  499. int cmTextCmpN( const cmChar_t* s0, const cmChar_t* s1, unsigned n )
  500. {
  501. if( s0 == NULL && s1 == NULL )
  502. return 0;
  503. if( s0 == NULL || s1 == NULL )
  504. {
  505. if( s0 == NULL )
  506. return -1;
  507. return 1;
  508. }
  509. return strncmp(s0,s1,n);
  510. }
  511. void cmTextToLower( const cmChar_t* s0, cmChar_t* s1 )
  512. {
  513. if( s0 == NULL || s1==NULL )
  514. return;
  515. for(; *s0; ++s0,++s1)
  516. *s1 = tolower(*s0);
  517. *s1 = 0;
  518. return;
  519. }
  520. void cmTextToUpper( const cmChar_t* s0, cmChar_t* s1 )
  521. {
  522. if( s0 == NULL || s1==NULL )
  523. return;
  524. for(; *s0; ++s0,++s1)
  525. *s1 = toupper(*s0);
  526. *s1 = 0;
  527. return;
  528. }
  529. cmChar_t* cmTextLine( cmChar_t* s, unsigned line )
  530. {
  531. assert( line>0);
  532. unsigned i;
  533. // count down to the code line containing the tag reference
  534. for(i=0; i<line-1; ++i)
  535. {
  536. s = strchr(s,'\n');
  537. if( s == NULL )
  538. return NULL;
  539. ++s;
  540. }
  541. return s+1;
  542. }
  543. const cmChar_t* cmTextLineC( const cmChar_t* s, unsigned line )
  544. { return cmTextLine((cmChar_t*)s,line); }
  545. cmChar_t* cmTextRemoveConsecutiveSpaces( cmChar_t* s )
  546. {
  547. if( s==NULL || strlen(s) < 2 )
  548. return s;
  549. int i=1;
  550. while( s[i] )
  551. {
  552. if( isspace(s[i-1]) && isspace(s[i]) )
  553. cmTextShrinkS(s, s+i, 1 );
  554. else
  555. ++i;
  556. }
  557. return s;
  558. }
  559. cmChar_t* cmTextColumize( cmChar_t* s, unsigned colCnt )
  560. {
  561. if( s==NULL || strlen(s) < colCnt )
  562. return s;
  563. int i = 0;
  564. int c = 0;
  565. cmChar_t* c0 = NULL;
  566. for(; s[i]; ++i)
  567. {
  568. // remove any existing newlines
  569. if( s[i] == '\n' )
  570. s[i] = ' ';
  571. // track the last space (which is a potential wrap point).
  572. if( isspace(s[i]) )
  573. c0 = s+i;
  574. if( c < colCnt )
  575. ++c;
  576. else
  577. {
  578. // if there is no previous wrap point ...
  579. if( c0 == NULL )
  580. {
  581. // ... then insert one
  582. s = cmTextInsertS(s,s+i,"\n");
  583. }
  584. else
  585. {
  586. // replace the wrap point with a '\n'
  587. *c0 = '\n';
  588. }
  589. c = 0;
  590. c0 = NULL;
  591. }
  592. }
  593. return s;
  594. }
  595. cmChar_t* _cmTextPrefixRows( cmChar_t* s, const cmChar_t* t )
  596. {
  597. if( s==NULL || t==NULL || strlen(t)==0 )
  598. return s;
  599. int i;
  600. for(i=0; s[i]; ++i)
  601. if( i==0 || s[i]=='\n')
  602. {
  603. cmChar_t* u = s + (i==0 ? 0 : i+1);
  604. s = cmTextInsertS(s,u,t);
  605. }
  606. return s;
  607. }
  608. cmChar_t* cmTextIndentRows( cmChar_t* s, unsigned indent )
  609. {
  610. if( s==NULL || indent==0 )
  611. return s;
  612. cmChar_t* t = cmMemAllocZ( cmChar_t, indent+1 );
  613. cmVOC_Fill(t,indent,' ');
  614. t[indent] = 0;
  615. s = _cmTextPrefixRows(s,t);
  616. cmMemFree(t);
  617. return s;
  618. }
  619. cmChar_t* cmTextPrefixRows( cmChar_t* s, const cmChar_t* t )
  620. { return _cmTextPrefixRows(s,t); }
  621. cmChar_t* cmTextTrimRows( cmChar_t* s )
  622. {
  623. bool fl = true;
  624. int i = 0;
  625. while( s[i] )
  626. {
  627. if( s[i] == '\n' )
  628. {
  629. fl = true;
  630. ++i;
  631. }
  632. else
  633. {
  634. if( isspace(s[i]) && fl )
  635. cmTextShrinkS(s, s+i, 1 );
  636. else
  637. {
  638. fl = false;
  639. ++i;
  640. }
  641. }
  642. }
  643. return s;
  644. }
  645. cmChar_t* cmTextEatLeadingSpace( cmChar_t* s )
  646. {
  647. if( s == NULL )
  648. return s;
  649. while( *s )
  650. {
  651. if( !isspace(*s) )
  652. break;
  653. cmTextShrinkS(s,s,1);
  654. }
  655. return s;
  656. }
  657. cmChar_t* cmTextNextRow( cmChar_t* s )
  658. {
  659. if( s == NULL)
  660. return NULL;
  661. for(; *s; ++s)
  662. if( *s == '\n' )
  663. {
  664. ++s;
  665. return *s==0 ? NULL : s;
  666. }
  667. return NULL;
  668. }
  669. const cmChar_t* cmTextNextRowC( const cmChar_t* s )
  670. { return cmTextNextRow((cmChar_t*)s); }
  671. unsigned cmTextMinIndent( const cmChar_t* s )
  672. {
  673. // leadFl=true if at beginning of row
  674. bool leadFl = true;
  675. unsigned min_indent = INT_MAX;
  676. unsigned indent = 0;
  677. for(; *s; ++s)
  678. {
  679. if( leadFl )
  680. {
  681. if( isspace(*s) && *s!='\n' )
  682. indent += 1;
  683. else
  684. {
  685. if( indent < min_indent )
  686. min_indent = indent;
  687. indent = 0;
  688. leadFl = false;
  689. }
  690. }
  691. else
  692. {
  693. if( *s == '\n' )
  694. leadFl = true;
  695. }
  696. }
  697. return min_indent==INT_MAX ? 0 : min_indent;
  698. }
  699. cmChar_t* cmTextOutdent( cmChar_t* s, unsigned outdent )
  700. {
  701. // leadFl=true if at beginning of row
  702. bool leadFl = true;
  703. unsigned indent = 0;
  704. cmChar_t* cs = s;
  705. cmChar_t* s0 = s;
  706. for(; *cs; ++cs)
  707. {
  708. if( leadFl )
  709. {
  710. if( isspace(*cs) && *cs!='\n' )
  711. indent += 1;
  712. else
  713. {
  714. unsigned n = cmMin(outdent,indent);
  715. cmTextShrinkS(s,s0,n);
  716. cs -= n;
  717. indent = 0;
  718. leadFl = false;
  719. }
  720. }
  721. else
  722. {
  723. if( *cs == '\n' )
  724. {
  725. leadFl = true;
  726. s0 = cs + 1;
  727. }
  728. }
  729. }
  730. return s;
  731. }