diff options
Diffstat (limited to '')
| -rw-r--r-- | src/u_vars_next.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/u_vars_next.c b/src/u_vars_next.c new file mode 100644 index 0000000..820bbe1 --- /dev/null +++ b/src/u_vars_next.c @@ -0,0 +1,102 @@ +/* ************************************************************************** */ +/* */ +/* ::: :::::::: */ +/* u_vars_next.c :+: :+: :+: */ +/* +:+ +:+ +:+ */ +/* By: rbousset <marvin@42.fr> +#+ +:+ +#+ */ +/* +#+#+#+#+#+ +#+ */ +/* Created: 2020/02/14 17:19:27 by rbousset #+# #+# */ +/* Updated: 2020/02/14 17:19:29 by rbousset ### ########lyon.fr */ +/* */ +/* ************************************************************************** */ + +#include <libft.h> +#include <inttypes.h> +#include <stdlib.h> + +#include "d_enum.h" +#include "s_lvars.h" +#include "s_struct.h" + +static int64_t + u_get_env_var_line(const char varname[], + t_msh *msh) +{ + char **env_ptr; + int64_t i; + + env_ptr = msh->envp; + i = 0; + while (*env_ptr && + ft_strncmp(varname, *env_ptr, ft_strclen(*env_ptr, '=')) != 0) + { + env_ptr++; + i++; + } + if (*env_ptr) + return (i); + else + return (-1); +} + +static t_bool + u_get_custom_var_existance(const char varname[], + t_msh *msh) +{ + t_lvars *ptr; + + ptr = msh->vars; + while (ptr && + ft_strncmp(varname, ptr->name, ft_strlen(varname) + 1) != 0) + { + ptr = ptr->next; + } + if (ptr != NULL) + { + return (TRUE); + } + else + { + return (FALSE); + } +} + +/* +** void +** u_subst_var_value(const char varname[], const char newval[], t_msh *msh); +** +** DESCRIPTION +** The subst_var_value() changes the value of msh->envp +** variable varname[] with newval[]. If varname[] wasn't found +** in msh->envp, varname[] is searched in msh->vars. +*/ + +void + u_subst_var_value(const char varname[], + const char newval[], + t_msh *msh) +{ + char new_line_fmt[2048]; + int64_t env_line; + + if ((env_line = u_get_env_var_line(varname + 1, msh)) > -1) + { + ft_memdel((void*)&msh->envp[env_line]); + ft_sprintf(new_line_fmt, "%s=%s", varname + 1, newval); + if (!(msh->envp[env_line] = + (char*)malloc((ft_strlen(new_line_fmt) + 1) * sizeof(char)))) + { + /* TODO: Handle this fail */ + } + (void)ft_strlcpy(msh->envp[env_line], + new_line_fmt, ft_strlen(new_line_fmt) + 1); + } + else if ((env_line = u_get_custom_var_existance(varname + 1, msh)) == TRUE) + { + lvars_rebind(&msh->vars, varname + 1, newval); + } + else + { + lvars_add_front(&msh->vars, lvars_new(varname + 1, newval)); + } +} |