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Overview
| Comment: | Minor improvements to the previous find_option() commit. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | th1-query-api |
| Files: | files | file ages | folders |
| SHA1: |
232008406fa462e3f12eb5bb2bc58738 |
| User & Date: | stephan 2012-07-14 10:17:37 |
| Original Comment: | find_option() now accepts --long=VAL and --short=VAL forms, in addition to the conventional --long VAL and -short VAL. Long-form has had this feature a while (apparently) but it has not been documented AFAIK. |
Context
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2012-07-14
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| 10:22 | Added docs for the th1 query API. Added basic th1 argv-handling API. check-in: a8eace9a user: stephan tags: th1-query-api | |
| 10:17 | Minor improvements to the previous find_option() commit. check-in: 23200840 user: stephan tags: th1-query-api | |
| 09:14 | find_option() now accepts --long=VAL and --short=VAL forms, in addition to the conventional --long VAL and -short VAL. Long-form has had this feature a while (apparently) but it has not been documented AFAIK. check-in: aa3ea63c user: stephan tags: th1-query-api | |
Changes
Changes to src/main.c.
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/* ** Look for a command-line option. If present, return a pointer. ** Return NULL if missing. ** ** hasArg==0 means the option is a flag. It is either present or not. ** hasArg==1 means the option has an argument. Return a pointer to the ** argument. ** ** Note that this function REMOVES any found entry from the args list, ** so calling this twice for the same var will cause NULL to be returned ** after the first time. ** ** zLong may not be NULL but zShort may be. ** ** Options are accepted in these forms, depending on the value of hasArg: ** ** hasArg=true: ** -long VALUE ** -long=VALUE ** -short VALUE ** -short=VALUE */ const char *find_option(const char *zLong, const char *zShort, int hasArg){ int i; int nLong, nShort; const char *zReturn = 0; assert( hasArg==0 || hasArg==1 ); nLong = strlen(zLong); ................................................................................ } if( strncmp(z,zLong,nLong)==0 ){ if( hasArg && z[nLong]=='=' ){ zReturn = &z[nLong+1]; remove_from_argv(i, 1); break; }else if( z[nLong]==0 ){ if (i+hasArg >= g.argc) break; zReturn = g.argv[i+hasArg]; remove_from_argv(i, 1+hasArg); break; } }else if( strncmp(z,zShort,nShort)==0 ){ if( hasArg && z[nShort]=='=' ){ zReturn = &z[nShort+1]; remove_from_argv(i, 1); break; }else if( z[nShort]==0 ){ if (i+hasArg >= g.argc) break; zReturn = g.argv[i+hasArg]; remove_from_argv(i, 1+hasArg); break; } } } return zReturn; |
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/* ** Look for a command-line option. If present, return a pointer. ** Return NULL if missing. ** ** hasArg==0 means the option is a flag. It is either present or not. ** hasArg==1 means the option has an argument. Return a pointer to ** the argument. If hasArg is 0 and the argument is found then a ** pointer to an empty string is returned (to distinguish from ** NULL). If hasArg==1 and the option lies at the end of the argument ** list, it is treated as if it had not been found. ** ** Note that this function REMOVES any found entry from the args list, ** so calling this twice for the same var will cause NULL to be ** returned after the first time. ** ** zLong may not be NULL but zShort may be. ** ** Options are accepted in these forms, depending on the value of ** hasArg: ** ** hasArg=true: ** -long (hasArg==0) ** -long VALUE (hasArg==1) ** -long=VALUE (hasArg==1) ** -short (hasArg==0) ** -short VALUE (hasArg==1) ** -short=VALUE (hasArg==1) */ const char *find_option(const char *zLong, const char *zShort, int hasArg){ int i; int nLong, nShort; const char *zReturn = 0; assert( hasArg==0 || hasArg==1 ); nLong = strlen(zLong); ................................................................................ } if( strncmp(z,zLong,nLong)==0 ){ if( hasArg && z[nLong]=='=' ){ zReturn = &z[nLong+1]; remove_from_argv(i, 1); break; }else if( z[nLong]==0 ){ if( hasArg ){ if (i+hasArg >= g.argc) break; zReturn = g.argv[i+hasArg]; }else{ zReturn = ""; } remove_from_argv(i, 1+hasArg); break; } }else if( strncmp(z,zShort,nShort)==0 ){ if( hasArg && z[nShort]=='=' ){ zReturn = &z[nShort+1]; remove_from_argv(i, 1); break; }else if( z[nShort]==0 ){ if( hasArg ){ if (i+hasArg >= g.argc) break; zReturn = g.argv[i+hasArg]; }else{ zReturn = ""; } remove_from_argv(i, 1+hasArg); break; } } } return zReturn; |